Parity checks
X-checks 396 (max weight 4) · Z-checks 396 (max weight 4)
H_X (396 checks, sparse supports)
[0, 1]
[2, 3]
[5, 6]
[7, 8]
[10, 11]
[12, 13]
[15, 16]
[17, 18]
[20, 21]
[22, 23]
[1, 2, 26, 27]
[3, 4, 28, 29]
[6, 7, 31, 32]
[8, 9, 33, 34]
[11, 12, 36, 37]
[13, 14, 38, 39]
[16, 17, 41, 42]
[18, 19, 43, 44]
[21, 22, 46, 47]
[23, 24, 48, 49]
[25, 26, 50, 51]
[27, 28, 52, 53]
[30, 31, 55, 56]
[32, 33, 57, 58]
[35, 36, 60, 61]
[37, 38, 62, 63]
[40, 41, 65, 66]
[42, 43, 67, 68]
[45, 46, 70, 71]
[47, 48, 72, 73]
[51, 52, 76, 77]
[53, 54, 78, 79]
[56, 57, 82, 83]
[58, 59, 84, 85]
[61, 62, 88, 89]
[63, 64, 90, 91]
[66, 67, 94, 95]
[68, 69, 96, 97]
[71, 72, 100, 101]
[73, 74, 102, 103]
[75, 76, 104, 105]
[77, 78, 106, 107]
[79, 80, 108, 109]
[81, 82, 110, 111]
[83, 84, 112, 113]
[85, 86, 114, 115]
[87, 88, 116, 117]
[89, 90, 118, 119]
[91, 92, 120, 121]
[93, 94, 122, 123]
[95, 96, 124, 125]
[97, 98, 126, 127]
[99, 100, 128, 129]
[101, 102, 130, 131]
[105, 106]
[107, 108, 133, 134]
[109, 110, 135, 136]
[111, 112, 137]
[113, 114, 138, 139]
[115, 116, 140, 141]
[117, 118, 142]
[119, 120, 143, 144]
[121, 122, 145, 146]
[123, 124, 147]
[125, 126, 148, 149]
[127, 128, 150, 151]
[129, 130, 152]
[131, 132]
[153, 154]
[133, 155, 156]
[134, 135, 157, 158]
[136, 137, 159, 160]
[138, 161, 162]
[139, 140, 163, 164]
[141, 142, 165, 166]
[143, 167, 168]
[144, 145, 169, 170]
[146, 147, 171, 172]
[148, 173, 174]
[149, 150, 175, 176]
[151, 152, 177, 178]
[179, 180]
[154, 155, 183, 184]
[156, 157, 185, 186]
[158, 159, 187, 188]
[160, 161, 189, 190]
[162, 163, 191, 192]
[164, 165, 193, 194]
[166, 167, 195, 196]
[168, 169, 197, 198]
[170, 171, 199, 200]
[172, 173, 201, 202]
[174, 175, 203, 204]
[176, 177, 205, 206]
[178, 179, 207, 208]
[180, 181, 209, 210]
[182, 183, 211, 212]
[184, 185, 213, 214]
[188, 189, 216, 217]
[190, 191, 218, 219]
[194, 195, 221, 222]
[196, 197, 223, 224]
[200, 201, 226, 227]
[202, 203, 228, 229]
[206, 207, 231, 232]
[208, 209, 233, 234]
[212, 213, 237, 238]
[214, 215, 239, 240]
[217, 218, 243, 244]
[219, 220, 245, 246]
[222, 223, 249, 250]
[224, 225, 251, 252]
[227, 228, 255, 256]
[229, 230, 257, 258]
[232, 233, 261, 262]
[234, 235, 263, 264]
[236, 237, 265, 266]
[238, 239, 267, 268]
[240, 241, 269, 270]
[242, 243, 271, 272]
[244, 245, 273, 274]
[246, 247, 275, 276]
[248, 249, 277, 278]
[250, 251, 279, 280]
[252, 253, 281, 282]
[254, 255, 283, 284]
[256, 257, 285, 286]
[258, 259, 287, 288]
[260, 261, 289, 290]
[262, 263, 291, 292]
[266, 267]
[268, 269, 294, 295]
[270, 271, 296, 297]
[272, 273, 298]
[274, 275, 299, 300]
[276, 277, 301, 302]
[278, 279, 303]
[280, 281, 304, 305]
[282, 283, 306, 307]
[284, 285, 308]
[286, 287, 309, 310]
[288, 289, 311, 312]
[290, 291, 313]
[292, 293]
[314, 315]
[294, 316, 317]
[295, 296, 318, 319]
[297, 298, 320, 321]
[299, 322, 323]
[300, 301, 324, 325]
[302, 303, 326, 327]
[304, 328, 329]
[305, 306, 330, 331]
[307, 308, 332, 333]
[309, 334, 335]
[310, 311, 336, 337]
[312, 313, 338, 339]
[340, 341]
[315, 316, 344, 345]
[317, 318, 346, 347]
[319, 320, 348, 349]
[321, 322, 350, 351]
[323, 324, 352, 353]
[325, 326, 354, 355]
[327, 328, 356, 357]
[329, 330, 358, 359]
[331, 332, 360, 361]
[333, 334, 362, 363]
[335, 336, 364, 365]
[337, 338, 366, 367]
[339, 340, 368, 369]
[341, 342, 370, 371]
[343, 344, 372, 373]
[345, 346, 374, 375]
[349, 350, 377, 378]
[351, 352, 379, 380]
[355, 356, 382, 383]
[357, 358, 384, 385]
[361, 362, 387, 388]
[363, 364, 389, 390]
[367, 368, 392, 393]
[369, 370, 394, 395]
[373, 374, 398, 399]
[375, 376, 400, 401]
[378, 379, 404, 405]
[380, 381, 406, 407]
[383, 384, 410, 411]
[385, 386, 412, 413]
[388, 389, 416, 417]
[390, 391, 418, 419]
[393, 394, 422, 423]
[395, 396, 424, 425]
[397, 398, 426, 427]
[399, 400, 428, 429]
[401, 402, 430, 431]
[403, 404, 432, 433]
[405, 406, 434, 435]
[407, 408, 436, 437]
[409, 410, 438, 439]
[411, 412, 440, 441]
[413, 414, 442, 443]
[415, 416, 444, 445]
[417, 418, 446, 447]
[419, 420, 448, 449]
[421, 422, 450, 451]
[423, 424, 452, 453]
[427, 428]
[429, 430, 455, 456]
[431, 432, 457, 458]
[433, 434, 459]
[435, 436, 460, 461]
[437, 438, 462, 463]
[439, 440, 464]
[441, 442, 465, 466]
[443, 444, 467, 468]
[445, 446, 469]
[447, 448, 470, 471]
[449, 450, 472, 473]
[451, 452, 474]
[453, 454]
[475, 476]
[455, 477, 478]
[456, 457, 479, 480]
[458, 459, 481, 482]
[460, 483, 484]
[461, 462, 485, 486]
[463, 464, 487, 488]
[465, 489, 490]
[466, 467, 491, 492]
[468, 469, 493, 494]
[470, 495, 496]
[471, 472, 497, 498]
[473, 474, 499, 500]
[501, 502]
[476, 477, 505, 506]
[478, 479, 507, 508]
[480, 481, 509, 510]
[482, 483, 511, 512]
[484, 485, 513, 514]
[486, 487, 515, 516]
[488, 489, 517, 518]
[490, 491, 519, 520]
[492, 493, 521, 522]
[494, 495, 523, 524]
[496, 497, 525, 526]
[498, 499, 527, 528]
[500, 501, 529, 530]
[502, 503, 531, 532]
[504, 505, 533, 534]
[506, 507, 535, 536]
[510, 511, 538, 539]
[512, 513, 540, 541]
[516, 517, 543, 544]
[518, 519, 545, 546]
[522, 523, 548, 549]
[524, 525, 550, 551]
[528, 529, 553, 554]
[530, 531, 555, 556]
[534, 535, 559, 560]
[536, 537, 561, 562]
[539, 540, 565, 566]
[541, 542, 567, 568]
[544, 545, 571, 572]
[546, 547, 573, 574]
[549, 550, 577, 578]
[551, 552, 579, 580]
[554, 555, 583, 584]
[556, 557, 585, 586]
[558, 559, 587, 588]
[560, 561, 589, 590]
[562, 563, 591, 592]
[564, 565, 593, 594]
[566, 567, 595, 596]
[568, 569, 597, 598]
[570, 571, 599, 600]
[572, 573, 601, 602]
[574, 575, 603, 604]
[576, 577, 605, 606]
[578, 579, 607, 608]
[580, 581, 609, 610]
[582, 583, 611, 612]
[584, 585, 613, 614]
[588, 589]
[590, 591, 616, 617]
[592, 593, 618, 619]
[594, 595, 620]
[596, 597, 621, 622]
[598, 599, 623, 624]
[600, 601, 625]
[602, 603, 626, 627]
[604, 605, 628, 629]
[606, 607, 630]
[608, 609, 631, 632]
[610, 611, 633, 634]
[612, 613, 635]
[614, 615]
[636, 637]
[616, 638, 639]
[617, 618, 640, 641]
[619, 620, 642, 643]
[621, 644, 645]
[622, 623, 646, 647]
[624, 625, 648, 649]
[626, 650, 651]
[627, 628, 652, 653]
[629, 630, 654, 655]
[631, 656, 657]
[632, 633, 658, 659]
[634, 635, 660, 661]
[662, 663]
[637, 638, 666, 667]
[639, 640, 668, 669]
[641, 642, 670, 671]
[643, 644, 672, 673]
[645, 646, 674, 675]
[647, 648, 676, 677]
[649, 650, 678, 679]
[651, 652, 680, 681]
[653, 654, 682, 683]
[655, 656, 684, 685]
[657, 658, 686, 687]
[659, 660, 688, 689]
[661, 662, 690, 691]
[663, 664, 692, 693]
[665, 666, 694, 695]
[667, 668, 696, 697]
[671, 672, 699, 700]
[673, 674, 701, 702]
[677, 678, 704, 705]
[679, 680, 706, 707]
[683, 684, 709, 710]
[685, 686, 711, 712]
[689, 690, 714, 715]
[691, 692, 716, 717]
[695, 696, 720, 721]
[697, 698, 722, 723]
[700, 701, 726, 727]
[702, 703, 728, 729]
[705, 706, 732, 733]
[707, 708, 734, 735]
[710, 711, 738, 739]
[712, 713, 740, 741]
[715, 716, 744, 745]
[717, 718, 746, 747]
[719, 720, 748, 749]
[721, 722, 750, 751]
[723, 724, 752, 753]
[725, 726, 754, 755]
[727, 728, 756, 757]
[729, 730, 758, 759]
[731, 732, 760, 761]
[733, 734, 762, 763]
[735, 736, 764, 765]
[737, 738, 766, 767]
[739, 740, 768, 769]
[741, 742, 770, 771]
[743, 744, 772, 773]
[745, 746, 774, 775]
[749, 750]
[751, 752, 777, 778]
[753, 754, 779, 780]
[755, 756, 781]
[757, 758, 782, 783]
[759, 760, 784, 785]
[761, 762, 786]
[763, 764, 787, 788]
[765, 766, 789, 790]
[767, 768, 791]
[769, 770, 792, 793]
[771, 772, 794, 795]
[773, 774, 796]
[775, 776]
[777, 797]
[778, 779, 798, 799]
[780, 781, 800, 801]
[782, 802]
[783, 784, 803, 804]
[785, 786, 805, 806]
[787, 807]
[788, 789, 808, 809]
[790, 791, 810, 811]
[792, 812]
[793, 794, 813, 814]
[795, 796, 815, 816]
[797, 798, 817, 818]
[799, 800, 819, 820]
[801, 821]
[802, 803, 822, 823]
[804, 805, 824, 825]
[806, 826]
[807, 808, 827, 828]
[809, 810, 829, 830]
[811, 831]
[812, 813, 832, 833]
[814, 815, 834, 835]
[816, 836]
H_Z (396 checks, sparse supports)
[0, 1, 25, 26]
[2, 3, 27, 28]
[4, 29]
[5, 6, 30, 31]
[7, 8, 32, 33]
[9, 34]
[10, 11, 35, 36]
[12, 13, 37, 38]
[14, 39]
[15, 16, 40, 41]
[17, 18, 42, 43]
[19, 44]
[20, 21, 45, 46]
[22, 23, 47, 48]
[24, 49]
[25, 50]
[26, 27, 51, 52]
[28, 29, 53, 54]
[30, 55]
[31, 32, 56, 57]
[33, 34, 58, 59]
[35, 60]
[36, 37, 61, 62]
[38, 39, 63, 64]
[40, 65]
[41, 42, 66, 67]
[43, 44, 68, 69]
[45, 70]
[46, 47, 71, 72]
[48, 49, 73, 74]
[50, 51, 75, 76]
[52, 53, 77, 78]
[54, 79, 80]
[55, 56, 81, 82]
[57, 58, 83, 84]
[59, 85, 86]
[60, 61, 87, 88]
[62, 63, 89, 90]
[64, 91, 92]
[65, 66, 93, 94]
[67, 68, 95, 96]
[69, 97, 98]
[70, 71, 99, 100]
[72, 73, 101, 102]
[74, 103]
[75, 104]
[76, 77, 105, 106]
[78, 79, 107, 108]
[80, 81, 109, 110]
[82, 83, 111, 112]
[84, 85, 113, 114]
[86, 87, 115, 116]
[88, 89, 117, 118]
[90, 91, 119, 120]
[92, 93, 121, 122]
[94, 95, 123, 124]
[96, 97, 125, 126]
[98, 99, 127, 128]
[100, 101, 129, 130]
[102, 103, 131, 132]
[108, 109, 134, 135]
[110, 111, 136, 137]
[114, 115, 139, 140]
[116, 117, 141, 142]
[120, 121, 144, 145]
[122, 123, 146, 147]
[126, 127, 149, 150]
[128, 129, 151, 152]
[133, 134, 156, 157]
[135, 136, 158, 159]
[138, 139, 162, 163]
[140, 141, 164, 165]
[143, 144, 168, 169]
[145, 146, 170, 171]
[148, 149, 174, 175]
[150, 151, 176, 177]
[153, 154, 182, 183]
[155, 156, 184, 185]
[157, 158, 186, 187]
[159, 160, 188, 189]
[161, 162, 190, 191]
[163, 164, 192, 193]
[165, 166, 194, 195]
[167, 168, 196, 197]
[169, 170, 198, 199]
[171, 172, 200, 201]
[173, 174, 202, 203]
[175, 176, 204, 205]
[177, 178, 206, 207]
[179, 180, 208, 209]
[181, 210]
[182, 211]
[183, 184, 212, 213]
[185, 186, 214, 215]
[187, 188, 216]
[189, 190, 217, 218]
[191, 192, 219, 220]
[193, 194, 221]
[195, 196, 222, 223]
[197, 198, 224, 225]
[199, 200, 226]
[201, 202, 227, 228]
[203, 204, 229, 230]
[205, 206, 231]
[207, 208, 232, 233]
[209, 210, 234, 235]
[211, 212, 236, 237]
[213, 214, 238, 239]
[215, 240, 241]
[216, 217, 242, 243]
[218, 219, 244, 245]
[220, 246, 247]
[221, 222, 248, 249]
[223, 224, 250, 251]
[225, 252, 253]
[226, 227, 254, 255]
[228, 229, 256, 257]
[230, 258, 259]
[231, 232, 260, 261]
[233, 234, 262, 263]
[235, 264]
[236, 265]
[237, 238, 266, 267]
[239, 240, 268, 269]
[241, 242, 270, 271]
[243, 244, 272, 273]
[245, 246, 274, 275]
[247, 248, 276, 277]
[249, 250, 278, 279]
[251, 252, 280, 281]
[253, 254, 282, 283]
[255, 256, 284, 285]
[257, 258, 286, 287]
[259, 260, 288, 289]
[261, 262, 290, 291]
[263, 264, 292, 293]
[269, 270, 295, 296]
[271, 272, 297, 298]
[275, 276, 300, 301]
[277, 278, 302, 303]
[281, 282, 305, 306]
[283, 284, 307, 308]
[287, 288, 310, 311]
[289, 290, 312, 313]
[294, 295, 317, 318]
[296, 297, 319, 320]
[299, 300, 323, 324]
[301, 302, 325, 326]
[304, 305, 329, 330]
[306, 307, 331, 332]
[309, 310, 335, 336]
[311, 312, 337, 338]
[314, 315, 343, 344]
[316, 317, 345, 346]
[318, 319, 347, 348]
[320, 321, 349, 350]
[322, 323, 351, 352]
[324, 325, 353, 354]
[326, 327, 355, 356]
[328, 329, 357, 358]
[330, 331, 359, 360]
[332, 333, 361, 362]
[334, 335, 363, 364]
[336, 337, 365, 366]
[338, 339, 367, 368]
[340, 341, 369, 370]
[342, 371]
[343, 372]
[344, 345, 373, 374]
[346, 347, 375, 376]
[348, 349, 377]
[350, 351, 378, 379]
[352, 353, 380, 381]
[354, 355, 382]
[356, 357, 383, 384]
[358, 359, 385, 386]
[360, 361, 387]
[362, 363, 388, 389]
[364, 365, 390, 391]
[366, 367, 392]
[368, 369, 393, 394]
[370, 371, 395, 396]
[372, 373, 397, 398]
[374, 375, 399, 400]
[376, 401, 402]
[377, 378, 403, 404]
[379, 380, 405, 406]
[381, 407, 408]
[382, 383, 409, 410]
[384, 385, 411, 412]
[386, 413, 414]
[387, 388, 415, 416]
[389, 390, 417, 418]
[391, 419, 420]
[392, 393, 421, 422]
[394, 395, 423, 424]
[396, 425]
[397, 426]
[398, 399, 427, 428]
[400, 401, 429, 430]
[402, 403, 431, 432]
[404, 405, 433, 434]
[406, 407, 435, 436]
[408, 409, 437, 438]
[410, 411, 439, 440]
[412, 413, 441, 442]
[414, 415, 443, 444]
[416, 417, 445, 446]
[418, 419, 447, 448]
[420, 421, 449, 450]
[422, 423, 451, 452]
[424, 425, 453, 454]
[430, 431, 456, 457]
[432, 433, 458, 459]
[436, 437, 461, 462]
[438, 439, 463, 464]
[442, 443, 466, 467]
[444, 445, 468, 469]
[448, 449, 471, 472]
[450, 451, 473, 474]
[455, 456, 478, 479]
[457, 458, 480, 481]
[460, 461, 484, 485]
[462, 463, 486, 487]
[465, 466, 490, 491]
[467, 468, 492, 493]
[470, 471, 496, 497]
[472, 473, 498, 499]
[475, 476, 504, 505]
[477, 478, 506, 507]
[479, 480, 508, 509]
[481, 482, 510, 511]
[483, 484, 512, 513]
[485, 486, 514, 515]
[487, 488, 516, 517]
[489, 490, 518, 519]
[491, 492, 520, 521]
[493, 494, 522, 523]
[495, 496, 524, 525]
[497, 498, 526, 527]
[499, 500, 528, 529]
[501, 502, 530, 531]
[503, 532]
[504, 533]
[505, 506, 534, 535]
[507, 508, 536, 537]
[509, 510, 538]
[511, 512, 539, 540]
[513, 514, 541, 542]
[515, 516, 543]
[517, 518, 544, 545]
[519, 520, 546, 547]
[521, 522, 548]
[523, 524, 549, 550]
[525, 526, 551, 552]
[527, 528, 553]
[529, 530, 554, 555]
[531, 532, 556, 557]
[533, 534, 558, 559]
[535, 536, 560, 561]
[537, 562, 563]
[538, 539, 564, 565]
[540, 541, 566, 567]
[542, 568, 569]
[543, 544, 570, 571]
[545, 546, 572, 573]
[547, 574, 575]
[548, 549, 576, 577]
[550, 551, 578, 579]
[552, 580, 581]
[553, 554, 582, 583]
[555, 556, 584, 585]
[557, 586]
[558, 587]
[559, 560, 588, 589]
[561, 562, 590, 591]
[563, 564, 592, 593]
[565, 566, 594, 595]
[567, 568, 596, 597]
[569, 570, 598, 599]
[571, 572, 600, 601]
[573, 574, 602, 603]
[575, 576, 604, 605]
[577, 578, 606, 607]
[579, 580, 608, 609]
[581, 582, 610, 611]
[583, 584, 612, 613]
[585, 586, 614, 615]
[591, 592, 617, 618]
[593, 594, 619, 620]
[597, 598, 622, 623]
[599, 600, 624, 625]
[603, 604, 627, 628]
[605, 606, 629, 630]
[609, 610, 632, 633]
[611, 612, 634, 635]
[616, 617, 639, 640]
[618, 619, 641, 642]
[621, 622, 645, 646]
[623, 624, 647, 648]
[626, 627, 651, 652]
[628, 629, 653, 654]
[631, 632, 657, 658]
[633, 634, 659, 660]
[636, 637, 665, 666]
[638, 639, 667, 668]
[640, 641, 669, 670]
[642, 643, 671, 672]
[644, 645, 673, 674]
[646, 647, 675, 676]
[648, 649, 677, 678]
[650, 651, 679, 680]
[652, 653, 681, 682]
[654, 655, 683, 684]
[656, 657, 685, 686]
[658, 659, 687, 688]
[660, 661, 689, 690]
[662, 663, 691, 692]
[664, 693]
[665, 694]
[666, 667, 695, 696]
[668, 669, 697, 698]
[670, 671, 699]
[672, 673, 700, 701]
[674, 675, 702, 703]
[676, 677, 704]
[678, 679, 705, 706]
[680, 681, 707, 708]
[682, 683, 709]
[684, 685, 710, 711]
[686, 687, 712, 713]
[688, 689, 714]
[690, 691, 715, 716]
[692, 693, 717, 718]
[694, 695, 719, 720]
[696, 697, 721, 722]
[698, 723, 724]
[699, 700, 725, 726]
[701, 702, 727, 728]
[703, 729, 730]
[704, 705, 731, 732]
[706, 707, 733, 734]
[708, 735, 736]
[709, 710, 737, 738]
[711, 712, 739, 740]
[713, 741, 742]
[714, 715, 743, 744]
[716, 717, 745, 746]
[718, 747]
[719, 748]
[720, 721, 749, 750]
[722, 723, 751, 752]
[724, 725, 753, 754]
[726, 727, 755, 756]
[728, 729, 757, 758]
[730, 731, 759, 760]
[732, 733, 761, 762]
[734, 735, 763, 764]
[736, 737, 765, 766]
[738, 739, 767, 768]
[740, 741, 769, 770]
[742, 743, 771, 772]
[744, 745, 773, 774]
[746, 747, 775, 776]
[752, 753, 778, 779]
[754, 755, 780, 781]
[758, 759, 783, 784]
[760, 761, 785, 786]
[764, 765, 788, 789]
[766, 767, 790, 791]
[770, 771, 793, 794]
[772, 773, 795, 796]
[777, 778, 797, 798]
[779, 780, 799, 800]
[782, 783, 802, 803]
[784, 785, 804, 805]
[787, 788, 807, 808]
[789, 790, 809, 810]
[792, 793, 812, 813]
[794, 795, 814, 815]
[798, 799, 818, 819]
[800, 801, 820, 821]
[803, 804, 823, 824]
[805, 806, 825, 826]
[808, 809, 828, 829]
[810, 811, 830, 831]
[813, 814, 833, 834]
[815, 816, 835, 836]
[817, 818]
[819, 820]
[822, 823]
[824, 825]
[827, 828]
[829, 830]
[832, 833]
[834, 835]