Parity checks
X-checks 426 (max weight 4) · Z-checks 426 (max weight 4)
H_X (426 checks, sparse supports)
[0, 1]
[2, 3]
[5, 6]
[7, 8]
[10, 11]
[12, 13]
[15, 16]
[17, 18]
[20, 21]
[22, 23]
[25, 26]
[27, 28]
[30, 31]
[32, 33]
[35, 36]
[37, 38]
[40, 41]
[42, 43]
[45, 46]
[47, 48]
[50, 51]
[52, 53]
[55, 56]
[57, 58]
[60, 61]
[62, 63]
[65, 66]
[67, 68]
[70, 71]
[72, 73]
[75, 76]
[77, 78]
[80, 81]
[82, 83]
[85, 86]
[87, 88]
[90, 91]
[92, 93]
[95, 96]
[97, 98]
[100, 101]
[102, 103]
[105, 106]
[107, 108]
[110, 111]
[112, 113]
[115, 116]
[117, 118]
[1, 2, 121, 122]
[3, 4, 123, 124]
[6, 7, 126, 127]
[8, 9, 128, 129]
[11, 12, 131, 132]
[13, 14, 133, 134]
[16, 17, 136, 137]
[18, 19, 138, 139]
[21, 22, 141, 142]
[23, 24, 143, 144]
[26, 27, 146, 147]
[28, 29, 148, 149]
[31, 32, 151, 152]
[33, 34, 153, 154]
[36, 37, 156, 157]
[38, 39, 158, 159]
[41, 42, 161, 162]
[43, 44, 163, 164]
[46, 47, 166, 167]
[48, 49, 168, 169]
[51, 52, 171, 172]
[53, 54, 173, 174]
[56, 57, 176, 177]
[58, 59, 178, 179]
[61, 62, 181, 182]
[63, 64, 183, 184]
[66, 67, 186, 187]
[68, 69, 188, 189]
[71, 72, 191, 192]
[73, 74, 193, 194]
[76, 77, 196, 197]
[78, 79, 198, 199]
[81, 82, 201, 202]
[83, 84, 203, 204]
[86, 87, 206, 207]
[88, 89, 208, 209]
[91, 92, 211, 212]
[93, 94, 213, 214]
[96, 97, 216, 217]
[98, 99, 218, 219]
[101, 102, 221, 222]
[103, 104, 223, 224]
[106, 107, 226, 227]
[108, 109, 228, 229]
[111, 112, 231, 232]
[113, 114, 233, 234]
[116, 117, 236, 237]
[118, 119, 238, 239]
[120, 121, 240, 241]
[122, 123, 242, 243]
[125, 126, 246, 247]
[127, 128, 248, 249]
[130, 131, 252, 253]
[132, 133, 254, 255]
[135, 136, 258, 259]
[137, 138, 260, 261]
[140, 141, 264, 265]
[142, 143, 266, 267]
[145, 146, 270, 271]
[147, 148, 272, 273]
[150, 151, 276, 277]
[152, 153, 278, 279]
[155, 156, 282, 283]
[157, 158, 284, 285]
[160, 161, 288, 289]
[162, 163, 290, 291]
[165, 166, 294, 295]
[167, 168, 296, 297]
[170, 171, 300, 301]
[172, 173, 302, 303]
[175, 176, 306, 307]
[177, 178, 308, 309]
[180, 181, 312, 313]
[182, 183, 314, 315]
[185, 186, 318, 319]
[187, 188, 320, 321]
[190, 191, 324, 325]
[192, 193, 326, 327]
[195, 196, 330, 331]
[197, 198, 332, 333]
[200, 201, 336, 337]
[202, 203, 338, 339]
[205, 206, 342, 343]
[207, 208, 344, 345]
[210, 211, 348, 349]
[212, 213, 350, 351]
[215, 216, 354, 355]
[217, 218, 356, 357]
[220, 221, 360, 361]
[222, 223, 362, 363]
[225, 226, 366, 367]
[227, 228, 368, 369]
[230, 231, 372, 373]
[232, 233, 374, 375]
[235, 236, 378, 379]
[237, 238, 380, 381]
[241, 242, 384, 385]
[243, 244, 386, 387]
[245, 246, 388, 389]
[247, 248, 390, 391]
[249, 250, 392, 393]
[251, 252, 394, 395]
[253, 254, 396, 397]
[255, 256, 398, 399]
[257, 258, 400, 401]
[259, 260, 402, 403]
[261, 262, 404, 405]
[263, 264, 406, 407]
[265, 266, 408, 409]
[267, 268, 410, 411]
[269, 270, 412, 413]
[271, 272, 414, 415]
[273, 274, 416, 417]
[275, 276, 418, 419]
[277, 278, 420, 421]
[279, 280, 422, 423]
[281, 282, 424, 425]
[283, 284, 426, 427]
[285, 286, 428, 429]
[287, 288, 430, 431]
[289, 290, 432, 433]
[291, 292, 434, 435]
[293, 294, 436, 437]
[295, 296, 438, 439]
[297, 298, 440, 441]
[299, 300, 442, 443]
[301, 302, 444, 445]
[303, 304, 446, 447]
[305, 306, 448, 449]
[307, 308, 450, 451]
[309, 310, 452, 453]
[311, 312, 454, 455]
[313, 314, 456, 457]
[315, 316, 458, 459]
[317, 318, 460, 461]
[319, 320, 462, 463]
[321, 322, 464, 465]
[323, 324, 466, 467]
[325, 326, 468, 469]
[327, 328, 470, 471]
[329, 330, 472, 473]
[331, 332, 474, 475]
[333, 334, 476, 477]
[335, 336, 478, 479]
[337, 338, 480, 481]
[339, 340, 482, 483]
[341, 342, 484, 485]
[343, 344, 486, 487]
[345, 346, 488, 489]
[347, 348, 490, 491]
[349, 350, 492, 493]
[351, 352, 494, 495]
[353, 354, 496, 497]
[355, 356, 498, 499]
[357, 358, 500, 501]
[359, 360, 502, 503]
[361, 362, 504, 505]
[363, 364, 506, 507]
[365, 366, 508, 509]
[367, 368, 510, 511]
[369, 370, 512, 513]
[371, 372, 514, 515]
[373, 374, 516, 517]
[375, 376, 518, 519]
[377, 378, 520, 521]
[379, 380, 522, 523]
[381, 382, 524, 525]
[383, 384, 526, 527]
[385, 386, 528, 529]
[387, 388, 530, 531]
[389, 390, 532, 533]
[391, 392, 534, 535]
[393, 394, 536, 537]
[395, 396, 538, 539]
[397, 398, 540, 541]
[399, 400, 542, 543]
[401, 402, 544, 545]
[403, 404, 546, 547]
[405, 406, 548, 549]
[407, 408, 550, 551]
[409, 410, 552, 553]
[411, 412, 554, 555]
[413, 414, 556, 557]
[415, 416, 558, 559]
[417, 418, 560, 561]
[419, 420, 562, 563]
[421, 422, 564, 565]
[423, 424, 566, 567]
[425, 426, 568, 569]
[427, 428, 570, 571]
[429, 430, 572, 573]
[431, 432, 574, 575]
[433, 434, 576, 577]
[435, 436, 578, 579]
[437, 438, 580, 581]
[439, 440, 582, 583]
[441, 442, 584, 585]
[443, 444, 586, 587]
[445, 446, 588, 589]
[447, 448, 590, 591]
[449, 450, 592, 593]
[451, 452, 594, 595]
[453, 454, 596, 597]
[455, 456, 598, 599]
[457, 458, 600, 601]
[459, 460, 602, 603]
[461, 462, 604, 605]
[463, 464, 606, 607]
[465, 466, 608, 609]
[467, 468, 610, 611]
[469, 470, 612, 613]
[471, 472, 614, 615]
[473, 474, 616, 617]
[475, 476, 618, 619]
[477, 478, 620, 621]
[479, 480, 622, 623]
[481, 482, 624, 625]
[483, 484, 626, 627]
[485, 486, 628, 629]
[487, 488, 630, 631]
[489, 490, 632, 633]
[491, 492, 634, 635]
[493, 494, 636, 637]
[495, 496, 638, 639]
[497, 498, 640, 641]
[499, 500, 642, 643]
[501, 502, 644, 645]
[503, 504, 646, 647]
[505, 506, 648, 649]
[507, 508, 650, 651]
[509, 510, 652, 653]
[511, 512, 654, 655]
[513, 514, 656, 657]
[515, 516, 658, 659]
[517, 518, 660, 661]
[519, 520, 662, 663]
[521, 522, 664, 665]
[523, 524, 666, 667]
[527, 528]
[529, 530, 669, 670]
[531, 532, 671, 672]
[533, 534, 673]
[535, 536, 674, 675]
[537, 538, 676, 677]
[539, 540, 678]
[541, 542, 679, 680]
[543, 544, 681, 682]
[545, 546, 683]
[547, 548, 684, 685]
[549, 550, 686, 687]
[551, 552, 688]
[553, 554, 689, 690]
[555, 556, 691, 692]
[557, 558, 693]
[559, 560, 694, 695]
[561, 562, 696, 697]
[563, 564, 698]
[565, 566, 699, 700]
[567, 568, 701, 702]
[569, 570, 703]
[571, 572, 704, 705]
[573, 574, 706, 707]
[575, 576, 708]
[577, 578, 709, 710]
[579, 580, 711, 712]
[581, 582, 713]
[583, 584, 714, 715]
[585, 586, 716, 717]
[587, 588, 718]
[589, 590, 719, 720]
[591, 592, 721, 722]
[593, 594, 723]
[595, 596, 724, 725]
[597, 598, 726, 727]
[599, 600, 728]
[601, 602, 729, 730]
[603, 604, 731, 732]
[605, 606, 733]
[607, 608, 734, 735]
[609, 610, 736, 737]
[611, 612, 738]
[613, 614, 739, 740]
[615, 616, 741, 742]
[617, 618, 743]
[619, 620, 744, 745]
[621, 622, 746, 747]
[623, 624, 748]
[625, 626, 749, 750]
[627, 628, 751, 752]
[629, 630, 753]
[631, 632, 754, 755]
[633, 634, 756, 757]
[635, 636, 758]
[637, 638, 759, 760]
[639, 640, 761, 762]
[641, 642, 763]
[643, 644, 764, 765]
[645, 646, 766, 767]
[647, 648, 768]
[649, 650, 769, 770]
[651, 652, 771, 772]
[653, 654, 773]
[655, 656, 774, 775]
[657, 658, 776, 777]
[659, 660, 778]
[661, 662, 779, 780]
[663, 664, 781, 782]
[665, 666, 783]
[667, 668]
[669, 784]
[670, 671, 785, 786]
[672, 673, 787, 788]
[674, 789]
[675, 676, 790, 791]
[677, 678, 792, 793]
[679, 794]
[680, 681, 795, 796]
[682, 683, 797, 798]
[684, 799]
[685, 686, 800, 801]
[687, 688, 802, 803]
[689, 804]
[690, 691, 805, 806]
[692, 693, 807, 808]
[694, 809]
[695, 696, 810, 811]
[697, 698, 812, 813]
[699, 814]
[700, 701, 815, 816]
[702, 703, 817, 818]
[704, 819]
[705, 706, 820, 821]
[707, 708, 822, 823]
[709, 824]
[710, 711, 825, 826]
[712, 713, 827, 828]
[714, 829]
[715, 716, 830, 831]
[717, 718, 832, 833]
[719, 834]
[720, 721, 835, 836]
[722, 723, 837, 838]
[724, 839]
[725, 726, 840, 841]
[727, 728, 842, 843]
[729, 844]
[730, 731, 845, 846]
[732, 733, 847, 848]
[734, 849]
[735, 736, 850, 851]
[737, 738, 852, 853]
[739, 854]
[740, 741, 855, 856]
[742, 743, 857, 858]
[744, 859]
[745, 746, 860, 861]
[747, 748, 862, 863]
[749, 864]
[750, 751, 865, 866]
[752, 753, 867, 868]
[754, 869]
[755, 756, 870, 871]
[757, 758, 872, 873]
[759, 874]
[760, 761, 875, 876]
[762, 763, 877, 878]
[764, 879]
[765, 766, 880, 881]
[767, 768, 882, 883]
[769, 884]
[770, 771, 885, 886]
[772, 773, 887, 888]
[774, 889]
[775, 776, 890, 891]
[777, 778, 892, 893]
[779, 894]
[780, 781, 895, 896]
[782, 783, 897, 898]
H_Z (426 checks, sparse supports)
[0, 1, 120, 121]
[2, 3, 122, 123]
[4, 124]
[5, 6, 125, 126]
[7, 8, 127, 128]
[9, 129]
[10, 11, 130, 131]
[12, 13, 132, 133]
[14, 134]
[15, 16, 135, 136]
[17, 18, 137, 138]
[19, 139]
[20, 21, 140, 141]
[22, 23, 142, 143]
[24, 144]
[25, 26, 145, 146]
[27, 28, 147, 148]
[29, 149]
[30, 31, 150, 151]
[32, 33, 152, 153]
[34, 154]
[35, 36, 155, 156]
[37, 38, 157, 158]
[39, 159]
[40, 41, 160, 161]
[42, 43, 162, 163]
[44, 164]
[45, 46, 165, 166]
[47, 48, 167, 168]
[49, 169]
[50, 51, 170, 171]
[52, 53, 172, 173]
[54, 174]
[55, 56, 175, 176]
[57, 58, 177, 178]
[59, 179]
[60, 61, 180, 181]
[62, 63, 182, 183]
[64, 184]
[65, 66, 185, 186]
[67, 68, 187, 188]
[69, 189]
[70, 71, 190, 191]
[72, 73, 192, 193]
[74, 194]
[75, 76, 195, 196]
[77, 78, 197, 198]
[79, 199]
[80, 81, 200, 201]
[82, 83, 202, 203]
[84, 204]
[85, 86, 205, 206]
[87, 88, 207, 208]
[89, 209]
[90, 91, 210, 211]
[92, 93, 212, 213]
[94, 214]
[95, 96, 215, 216]
[97, 98, 217, 218]
[99, 219]
[100, 101, 220, 221]
[102, 103, 222, 223]
[104, 224]
[105, 106, 225, 226]
[107, 108, 227, 228]
[109, 229]
[110, 111, 230, 231]
[112, 113, 232, 233]
[114, 234]
[115, 116, 235, 236]
[117, 118, 237, 238]
[119, 239]
[120, 240]
[121, 122, 241, 242]
[123, 124, 243, 244]
[125, 245, 246]
[126, 127, 247, 248]
[128, 129, 249, 250]
[130, 251, 252]
[131, 132, 253, 254]
[133, 134, 255, 256]
[135, 257, 258]
[136, 137, 259, 260]
[138, 139, 261, 262]
[140, 263, 264]
[141, 142, 265, 266]
[143, 144, 267, 268]
[145, 269, 270]
[146, 147, 271, 272]
[148, 149, 273, 274]
[150, 275, 276]
[151, 152, 277, 278]
[153, 154, 279, 280]
[155, 281, 282]
[156, 157, 283, 284]
[158, 159, 285, 286]
[160, 287, 288]
[161, 162, 289, 290]
[163, 164, 291, 292]
[165, 293, 294]
[166, 167, 295, 296]
[168, 169, 297, 298]
[170, 299, 300]
[171, 172, 301, 302]
[173, 174, 303, 304]
[175, 305, 306]
[176, 177, 307, 308]
[178, 179, 309, 310]
[180, 311, 312]
[181, 182, 313, 314]
[183, 184, 315, 316]
[185, 317, 318]
[186, 187, 319, 320]
[188, 189, 321, 322]
[190, 323, 324]
[191, 192, 325, 326]
[193, 194, 327, 328]
[195, 329, 330]
[196, 197, 331, 332]
[198, 199, 333, 334]
[200, 335, 336]
[201, 202, 337, 338]
[203, 204, 339, 340]
[205, 341, 342]
[206, 207, 343, 344]
[208, 209, 345, 346]
[210, 347, 348]
[211, 212, 349, 350]
[213, 214, 351, 352]
[215, 353, 354]
[216, 217, 355, 356]
[218, 219, 357, 358]
[220, 359, 360]
[221, 222, 361, 362]
[223, 224, 363, 364]
[225, 365, 366]
[226, 227, 367, 368]
[228, 229, 369, 370]
[230, 371, 372]
[231, 232, 373, 374]
[233, 234, 375, 376]
[235, 377, 378]
[236, 237, 379, 380]
[238, 239, 381, 382]
[240, 241, 383, 384]
[242, 243, 385, 386]
[244, 245, 387, 388]
[246, 247, 389, 390]
[248, 249, 391, 392]
[250, 251, 393, 394]
[252, 253, 395, 396]
[254, 255, 397, 398]
[256, 257, 399, 400]
[258, 259, 401, 402]
[260, 261, 403, 404]
[262, 263, 405, 406]
[264, 265, 407, 408]
[266, 267, 409, 410]
[268, 269, 411, 412]
[270, 271, 413, 414]
[272, 273, 415, 416]
[274, 275, 417, 418]
[276, 277, 419, 420]
[278, 279, 421, 422]
[280, 281, 423, 424]
[282, 283, 425, 426]
[284, 285, 427, 428]
[286, 287, 429, 430]
[288, 289, 431, 432]
[290, 291, 433, 434]
[292, 293, 435, 436]
[294, 295, 437, 438]
[296, 297, 439, 440]
[298, 299, 441, 442]
[300, 301, 443, 444]
[302, 303, 445, 446]
[304, 305, 447, 448]
[306, 307, 449, 450]
[308, 309, 451, 452]
[310, 311, 453, 454]
[312, 313, 455, 456]
[314, 315, 457, 458]
[316, 317, 459, 460]
[318, 319, 461, 462]
[320, 321, 463, 464]
[322, 323, 465, 466]
[324, 325, 467, 468]
[326, 327, 469, 470]
[328, 329, 471, 472]
[330, 331, 473, 474]
[332, 333, 475, 476]
[334, 335, 477, 478]
[336, 337, 479, 480]
[338, 339, 481, 482]
[340, 341, 483, 484]
[342, 343, 485, 486]
[344, 345, 487, 488]
[346, 347, 489, 490]
[348, 349, 491, 492]
[350, 351, 493, 494]
[352, 353, 495, 496]
[354, 355, 497, 498]
[356, 357, 499, 500]
[358, 359, 501, 502]
[360, 361, 503, 504]
[362, 363, 505, 506]
[364, 365, 507, 508]
[366, 367, 509, 510]
[368, 369, 511, 512]
[370, 371, 513, 514]
[372, 373, 515, 516]
[374, 375, 517, 518]
[376, 377, 519, 520]
[378, 379, 521, 522]
[380, 381, 523, 524]
[382, 525]
[383, 526]
[384, 385, 527, 528]
[386, 387, 529, 530]
[388, 389, 531, 532]
[390, 391, 533, 534]
[392, 393, 535, 536]
[394, 395, 537, 538]
[396, 397, 539, 540]
[398, 399, 541, 542]
[400, 401, 543, 544]
[402, 403, 545, 546]
[404, 405, 547, 548]
[406, 407, 549, 550]
[408, 409, 551, 552]
[410, 411, 553, 554]
[412, 413, 555, 556]
[414, 415, 557, 558]
[416, 417, 559, 560]
[418, 419, 561, 562]
[420, 421, 563, 564]
[422, 423, 565, 566]
[424, 425, 567, 568]
[426, 427, 569, 570]
[428, 429, 571, 572]
[430, 431, 573, 574]
[432, 433, 575, 576]
[434, 435, 577, 578]
[436, 437, 579, 580]
[438, 439, 581, 582]
[440, 441, 583, 584]
[442, 443, 585, 586]
[444, 445, 587, 588]
[446, 447, 589, 590]
[448, 449, 591, 592]
[450, 451, 593, 594]
[452, 453, 595, 596]
[454, 455, 597, 598]
[456, 457, 599, 600]
[458, 459, 601, 602]
[460, 461, 603, 604]
[462, 463, 605, 606]
[464, 465, 607, 608]
[466, 467, 609, 610]
[468, 469, 611, 612]
[470, 471, 613, 614]
[472, 473, 615, 616]
[474, 475, 617, 618]
[476, 477, 619, 620]
[478, 479, 621, 622]
[480, 481, 623, 624]
[482, 483, 625, 626]
[484, 485, 627, 628]
[486, 487, 629, 630]
[488, 489, 631, 632]
[490, 491, 633, 634]
[492, 493, 635, 636]
[494, 495, 637, 638]
[496, 497, 639, 640]
[498, 499, 641, 642]
[500, 501, 643, 644]
[502, 503, 645, 646]
[504, 505, 647, 648]
[506, 507, 649, 650]
[508, 509, 651, 652]
[510, 511, 653, 654]
[512, 513, 655, 656]
[514, 515, 657, 658]
[516, 517, 659, 660]
[518, 519, 661, 662]
[520, 521, 663, 664]
[522, 523, 665, 666]
[524, 525, 667, 668]
[530, 531, 670, 671]
[532, 533, 672, 673]
[536, 537, 675, 676]
[538, 539, 677, 678]
[542, 543, 680, 681]
[544, 545, 682, 683]
[548, 549, 685, 686]
[550, 551, 687, 688]
[554, 555, 690, 691]
[556, 557, 692, 693]
[560, 561, 695, 696]
[562, 563, 697, 698]
[566, 567, 700, 701]
[568, 569, 702, 703]
[572, 573, 705, 706]
[574, 575, 707, 708]
[578, 579, 710, 711]
[580, 581, 712, 713]
[584, 585, 715, 716]
[586, 587, 717, 718]
[590, 591, 720, 721]
[592, 593, 722, 723]
[596, 597, 725, 726]
[598, 599, 727, 728]
[602, 603, 730, 731]
[604, 605, 732, 733]
[608, 609, 735, 736]
[610, 611, 737, 738]
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