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