Parity checks
X-checks 456 (max weight 4) · Z-checks 456 (max weight 4)
H_X (456 checks, sparse supports)
[0, 1]
[2, 3]
[4, 5]
[7, 8]
[9, 10]
[11, 12]
[14, 15]
[16, 17]
[18, 19]
[21, 22]
[23, 24]
[25, 26]
[28, 29]
[30, 31]
[32, 33]
[35, 36]
[37, 38]
[39, 40]
[42, 43]
[44, 45]
[46, 47]
[49, 50]
[51, 52]
[53, 54]
[56, 57]
[58, 59]
[60, 61]
[63, 64]
[65, 66]
[67, 68]
[70, 71]
[72, 73]
[74, 75]
[77, 78]
[79, 80]
[81, 82]
[84, 85]
[86, 87]
[88, 89]
[1, 2, 92, 93]
[3, 4, 94, 95]
[5, 6, 96, 97]
[8, 9, 99, 100]
[10, 11, 101, 102]
[12, 13, 103, 104]
[15, 16, 106, 107]
[17, 18, 108, 109]
[19, 20, 110, 111]
[22, 23, 113, 114]
[24, 25, 115, 116]
[26, 27, 117, 118]
[29, 30, 120, 121]
[31, 32, 122, 123]
[33, 34, 124, 125]
[36, 37, 127, 128]
[38, 39, 129, 130]
[40, 41, 131, 132]
[43, 44, 134, 135]
[45, 46, 136, 137]
[47, 48, 138, 139]
[50, 51, 141, 142]
[52, 53, 143, 144]
[54, 55, 145, 146]
[57, 58, 148, 149]
[59, 60, 150, 151]
[61, 62, 152, 153]
[64, 65, 155, 156]
[66, 67, 157, 158]
[68, 69, 159, 160]
[71, 72, 162, 163]
[73, 74, 164, 165]
[75, 76, 166, 167]
[78, 79, 169, 170]
[80, 81, 171, 172]
[82, 83, 173, 174]
[85, 86, 176, 177]
[87, 88, 178, 179]
[89, 90, 180, 181]
[91, 92, 182, 183]
[93, 94, 184, 185]
[95, 96, 186, 187]
[98, 99, 189, 190]
[100, 101, 191, 192]
[102, 103, 193, 194]
[105, 106, 196, 197]
[107, 108, 198, 199]
[109, 110, 200, 201]
[112, 113, 203, 204]
[114, 115, 205, 206]
[116, 117, 207, 208]
[119, 120, 210, 211]
[121, 122, 212, 213]
[123, 124, 214, 215]
[126, 127, 217, 218]
[128, 129, 219, 220]
[130, 131, 221, 222]
[133, 134, 224, 225]
[135, 136, 226, 227]
[137, 138, 228, 229]
[140, 141, 231, 232]
[142, 143, 233, 234]
[144, 145, 235, 236]
[147, 148, 238, 239]
[149, 150, 240, 241]
[151, 152, 242, 243]
[154, 155, 245, 246]
[156, 157, 247, 248]
[158, 159, 249, 250]
[161, 162, 252, 253]
[163, 164, 254, 255]
[165, 166, 256, 257]
[168, 169, 259, 260]
[170, 171, 261, 262]
[172, 173, 263, 264]
[175, 176, 266, 267]
[177, 178, 268, 269]
[179, 180, 270, 271]
[183, 184, 274, 275]
[185, 186, 276, 277]
[187, 188, 278, 279]
[190, 191, 282, 283]
[192, 193, 284, 285]
[194, 195, 286, 287]
[197, 198, 290, 291]
[199, 200, 292, 293]
[201, 202, 294, 295]
[204, 205, 298, 299]
[206, 207, 300, 301]
[208, 209, 302, 303]
[211, 212, 306, 307]
[213, 214, 308, 309]
[215, 216, 310, 311]
[218, 219, 314, 315]
[220, 221, 316, 317]
[222, 223, 318, 319]
[225, 226, 322, 323]
[227, 228, 324, 325]
[229, 230, 326, 327]
[232, 233, 330, 331]
[234, 235, 332, 333]
[236, 237, 334, 335]
[239, 240, 338, 339]
[241, 242, 340, 341]
[243, 244, 342, 343]
[246, 247, 346, 347]
[248, 249, 348, 349]
[250, 251, 350, 351]
[253, 254, 354, 355]
[255, 256, 356, 357]
[257, 258, 358, 359]
[260, 261, 362, 363]
[262, 263, 364, 365]
[264, 265, 366, 367]
[267, 268, 370, 371]
[269, 270, 372, 373]
[271, 272, 374, 375]
[273, 274, 376, 377]
[275, 276, 378, 379]
[277, 278, 380, 381]
[279, 280, 382, 383]
[281, 282, 384, 385]
[283, 284, 386, 387]
[285, 286, 388, 389]
[287, 288, 390, 391]
[289, 290, 392, 393]
[291, 292, 394, 395]
[293, 294, 396, 397]
[295, 296, 398, 399]
[297, 298, 400, 401]
[299, 300, 402, 403]
[301, 302, 404, 405]
[303, 304, 406, 407]
[305, 306, 408, 409]
[307, 308, 410, 411]
[309, 310, 412, 413]
[311, 312, 414, 415]
[313, 314, 416, 417]
[315, 316, 418, 419]
[317, 318, 420, 421]
[319, 320, 422, 423]
[321, 322, 424, 425]
[323, 324, 426, 427]
[325, 326, 428, 429]
[327, 328, 430, 431]
[329, 330, 432, 433]
[331, 332, 434, 435]
[333, 334, 436, 437]
[335, 336, 438, 439]
[337, 338, 440, 441]
[339, 340, 442, 443]
[341, 342, 444, 445]
[343, 344, 446, 447]
[345, 346, 448, 449]
[347, 348, 450, 451]
[349, 350, 452, 453]
[351, 352, 454, 455]
[353, 354, 456, 457]
[355, 356, 458, 459]
[357, 358, 460, 461]
[359, 360, 462, 463]
[361, 362, 464, 465]
[363, 364, 466, 467]
[365, 366, 468, 469]
[367, 368, 470, 471]
[369, 370, 472, 473]
[371, 372, 474, 475]
[373, 374, 476, 477]
[377, 378, 480, 481]
[379, 380, 482, 483]
[381, 382, 484, 485]
[383, 384, 486, 487]
[385, 386, 488, 489]
[387, 388, 490, 491]
[389, 390, 492, 493]
[391, 392, 494, 495]
[393, 394, 496, 497]
[395, 396, 498, 499]
[397, 398, 500, 501]
[399, 400, 502, 503]
[401, 402, 504, 505]
[403, 404, 506, 507]
[405, 406, 508, 509]
[407, 408, 510, 511]
[409, 410, 512, 513]
[411, 412, 514, 515]
[413, 414, 516, 517]
[415, 416, 518, 519]
[417, 418, 520, 521]
[419, 420, 522, 523]
[421, 422, 524, 525]
[423, 424, 526, 527]
[425, 426, 528, 529]
[427, 428, 530, 531]
[429, 430, 532, 533]
[431, 432, 534, 535]
[433, 434, 536, 537]
[435, 436, 538, 539]
[437, 438, 540, 541]
[439, 440, 542, 543]
[441, 442, 544, 545]
[443, 444, 546, 547]
[445, 446, 548, 549]
[447, 448, 550, 551]
[449, 450, 552, 553]
[451, 452, 554, 555]
[453, 454, 556, 557]
[455, 456, 558, 559]
[457, 458, 560, 561]
[459, 460, 562, 563]
[461, 462, 564, 565]
[463, 464, 566, 567]
[465, 466, 568, 569]
[467, 468, 570, 571]
[469, 470, 572, 573]
[471, 472, 574, 575]
[473, 474, 576, 577]
[475, 476, 578, 579]
[477, 478, 580, 581]
[479, 480, 582, 583]
[481, 482, 584, 585]
[483, 484, 586, 587]
[485, 486, 588, 589]
[487, 488, 590, 591]
[489, 490, 592, 593]
[491, 492, 594, 595]
[493, 494, 596, 597]
[495, 496, 598, 599]
[497, 498, 600, 601]
[499, 500, 602, 603]
[501, 502, 604, 605]
[503, 504, 606, 607]
[505, 506, 608, 609]
[507, 508, 610, 611]
[509, 510, 612, 613]
[511, 512, 614, 615]
[513, 514, 616, 617]
[515, 516, 618, 619]
[517, 518, 620, 621]
[519, 520, 622, 623]
[521, 522, 624, 625]
[523, 524, 626, 627]
[525, 526, 628, 629]
[527, 528, 630, 631]
[529, 530, 632, 633]
[531, 532, 634, 635]
[533, 534, 636, 637]
[535, 536, 638, 639]
[537, 538, 640, 641]
[539, 540, 642, 643]
[541, 542, 644, 645]
[543, 544, 646, 647]
[545, 546, 648, 649]
[547, 548, 650, 651]
[549, 550, 652, 653]
[551, 552, 654, 655]
[553, 554, 656, 657]
[555, 556, 658, 659]
[557, 558, 660, 661]
[559, 560, 662, 663]
[561, 562, 664, 665]
[563, 564, 666, 667]
[565, 566, 668, 669]
[567, 568, 670, 671]
[569, 570, 672, 673]
[571, 572, 674, 675]
[573, 574, 676, 677]
[575, 576, 678, 679]
[577, 578, 680, 681]
[579, 580, 682, 683]
[583, 584]
[585, 586, 685]
[587, 588, 686, 687]
[589, 590, 688, 689]
[591, 592, 690, 691]
[593, 594, 692]
[595, 596, 693, 694]
[597, 598, 695, 696]
[599, 600, 697, 698]
[601, 602, 699]
[603, 604, 700, 701]
[605, 606, 702, 703]
[607, 608, 704, 705]
[609, 610, 706]
[611, 612, 707, 708]
[613, 614, 709, 710]
[615, 616, 711, 712]
[617, 618, 713]
[619, 620, 714, 715]
[621, 622, 716, 717]
[623, 624, 718, 719]
[625, 626, 720]
[627, 628, 721, 722]
[629, 630, 723, 724]
[631, 632, 725, 726]
[633, 634, 727]
[635, 636, 728, 729]
[637, 638, 730, 731]
[639, 640, 732, 733]
[641, 642, 734]
[643, 644, 735, 736]
[645, 646, 737, 738]
[647, 648, 739, 740]
[649, 650, 741]
[651, 652, 742, 743]
[653, 654, 744, 745]
[655, 656, 746, 747]
[657, 658, 748]
[659, 660, 749, 750]
[661, 662, 751, 752]
[663, 664, 753, 754]
[665, 666, 755]
[667, 668, 756, 757]
[669, 670, 758, 759]
[671, 672, 760, 761]
[673, 674, 762]
[675, 676, 763, 764]
[677, 678, 765, 766]
[679, 680, 767, 768]
[681, 682]
[683, 684]
[685, 686, 769, 770]
[687, 688, 771, 772]
[689, 690, 773, 774]
[691, 775]
[692, 693, 776, 777]
[694, 695, 778, 779]
[696, 697, 780, 781]
[698, 782]
[699, 700, 783, 784]
[701, 702, 785, 786]
[703, 704, 787, 788]
[705, 789]
[706, 707, 790, 791]
[708, 709, 792, 793]
[710, 711, 794, 795]
[712, 796]
[713, 714, 797, 798]
[715, 716, 799, 800]
[717, 718, 801, 802]
[719, 803]
[720, 721, 804, 805]
[722, 723, 806, 807]
[724, 725, 808, 809]
[726, 810]
[727, 728, 811, 812]
[729, 730, 813, 814]
[731, 732, 815, 816]
[733, 817]
[734, 735, 818, 819]
[736, 737, 820, 821]
[738, 739, 822, 823]
[740, 824]
[741, 742, 825, 826]
[743, 744, 827, 828]
[745, 746, 829, 830]
[747, 831]
[748, 749, 832, 833]
[750, 751, 834, 835]
[752, 753, 836, 837]
[754, 838]
[755, 756, 839, 840]
[757, 758, 841, 842]
[759, 760, 843, 844]
[761, 845]
[762, 763, 846, 847]
[764, 765, 848, 849]
[766, 767, 850, 851]
[768, 852]
[769, 853]
[770, 771, 854, 855]
[772, 773, 856, 857]
[774, 775, 858, 859]
[776, 860]
[777, 778, 861, 862]
[779, 780, 863, 864]
[781, 782, 865, 866]
[783, 867]
[784, 785, 868, 869]
[786, 787, 870, 871]
[788, 789, 872, 873]
[790, 874]
[791, 792, 875, 876]
[793, 794, 877, 878]
[795, 796, 879, 880]
[797, 881]
[798, 799, 882, 883]
[800, 801, 884, 885]
[802, 803, 886, 887]
[804, 888]
[805, 806, 889, 890]
[807, 808, 891, 892]
[809, 810, 893, 894]
[811, 895]
[812, 813, 896, 897]
[814, 815, 898, 899]
[816, 817, 900, 901]
[818, 902]
[819, 820, 903, 904]
[821, 822, 905, 906]
[823, 824, 907, 908]
[825, 909]
[826, 827, 910, 911]
[828, 829, 912, 913]
[830, 831, 914, 915]
[832, 916]
[833, 834, 917, 918]
[835, 836, 919, 920]
[837, 838, 921, 922]
[839, 923]
[840, 841, 924, 925]
[842, 843, 926, 927]
[844, 845, 928, 929]
[846, 930]
[847, 848, 931, 932]
[849, 850, 933, 934]
[851, 852, 935, 936]
H_Z (456 checks, sparse supports)
[0, 1, 91, 92]
[2, 3, 93, 94]
[4, 5, 95, 96]
[6, 97]
[7, 8, 98, 99]
[9, 10, 100, 101]
[11, 12, 102, 103]
[13, 104]
[14, 15, 105, 106]
[16, 17, 107, 108]
[18, 19, 109, 110]
[20, 111]
[21, 22, 112, 113]
[23, 24, 114, 115]
[25, 26, 116, 117]
[27, 118]
[28, 29, 119, 120]
[30, 31, 121, 122]
[32, 33, 123, 124]
[34, 125]
[35, 36, 126, 127]
[37, 38, 128, 129]
[39, 40, 130, 131]
[41, 132]
[42, 43, 133, 134]
[44, 45, 135, 136]
[46, 47, 137, 138]
[48, 139]
[49, 50, 140, 141]
[51, 52, 142, 143]
[53, 54, 144, 145]
[55, 146]
[56, 57, 147, 148]
[58, 59, 149, 150]
[60, 61, 151, 152]
[62, 153]
[63, 64, 154, 155]
[65, 66, 156, 157]
[67, 68, 158, 159]
[69, 160]
[70, 71, 161, 162]
[72, 73, 163, 164]
[74, 75, 165, 166]
[76, 167]
[77, 78, 168, 169]
[79, 80, 170, 171]
[81, 82, 172, 173]
[83, 174]
[84, 85, 175, 176]
[86, 87, 177, 178]
[88, 89, 179, 180]
[90, 181]
[91, 182]
[92, 93, 183, 184]
[94, 95, 185, 186]
[96, 97, 187, 188]
[98, 189]
[99, 100, 190, 191]
[101, 102, 192, 193]
[103, 104, 194, 195]
[105, 196]
[106, 107, 197, 198]
[108, 109, 199, 200]
[110, 111, 201, 202]
[112, 203]
[113, 114, 204, 205]
[115, 116, 206, 207]
[117, 118, 208, 209]
[119, 210]
[120, 121, 211, 212]
[122, 123, 213, 214]
[124, 125, 215, 216]
[126, 217]
[127, 128, 218, 219]
[129, 130, 220, 221]
[131, 132, 222, 223]
[133, 224]
[134, 135, 225, 226]
[136, 137, 227, 228]
[138, 139, 229, 230]
[140, 231]
[141, 142, 232, 233]
[143, 144, 234, 235]
[145, 146, 236, 237]
[147, 238]
[148, 149, 239, 240]
[150, 151, 241, 242]
[152, 153, 243, 244]
[154, 245]
[155, 156, 246, 247]
[157, 158, 248, 249]
[159, 160, 250, 251]
[161, 252]
[162, 163, 253, 254]
[164, 165, 255, 256]
[166, 167, 257, 258]
[168, 259]
[169, 170, 260, 261]
[171, 172, 262, 263]
[173, 174, 264, 265]
[175, 266]
[176, 177, 267, 268]
[178, 179, 269, 270]
[180, 181, 271, 272]
[182, 183, 273, 274]
[184, 185, 275, 276]
[186, 187, 277, 278]
[188, 279, 280]
[189, 190, 281, 282]
[191, 192, 283, 284]
[193, 194, 285, 286]
[195, 287, 288]
[196, 197, 289, 290]
[198, 199, 291, 292]
[200, 201, 293, 294]
[202, 295, 296]
[203, 204, 297, 298]
[205, 206, 299, 300]
[207, 208, 301, 302]
[209, 303, 304]
[210, 211, 305, 306]
[212, 213, 307, 308]
[214, 215, 309, 310]
[216, 311, 312]
[217, 218, 313, 314]
[219, 220, 315, 316]
[221, 222, 317, 318]
[223, 319, 320]
[224, 225, 321, 322]
[226, 227, 323, 324]
[228, 229, 325, 326]
[230, 327, 328]
[231, 232, 329, 330]
[233, 234, 331, 332]
[235, 236, 333, 334]
[237, 335, 336]
[238, 239, 337, 338]
[240, 241, 339, 340]
[242, 243, 341, 342]
[244, 343, 344]
[245, 246, 345, 346]
[247, 248, 347, 348]
[249, 250, 349, 350]
[251, 351, 352]
[252, 253, 353, 354]
[254, 255, 355, 356]
[256, 257, 357, 358]
[258, 359, 360]
[259, 260, 361, 362]
[261, 262, 363, 364]
[263, 264, 365, 366]
[265, 367, 368]
[266, 267, 369, 370]
[268, 269, 371, 372]
[270, 271, 373, 374]
[272, 375]
[273, 376]
[274, 275, 377, 378]
[276, 277, 379, 380]
[278, 279, 381, 382]
[280, 281, 383, 384]
[282, 283, 385, 386]
[284, 285, 387, 388]
[286, 287, 389, 390]
[288, 289, 391, 392]
[290, 291, 393, 394]
[292, 293, 395, 396]
[294, 295, 397, 398]
[296, 297, 399, 400]
[298, 299, 401, 402]
[300, 301, 403, 404]
[302, 303, 405, 406]
[304, 305, 407, 408]
[306, 307, 409, 410]
[308, 309, 411, 412]
[310, 311, 413, 414]
[312, 313, 415, 416]
[314, 315, 417, 418]
[316, 317, 419, 420]
[318, 319, 421, 422]
[320, 321, 423, 424]
[322, 323, 425, 426]
[324, 325, 427, 428]
[326, 327, 429, 430]
[328, 329, 431, 432]
[330, 331, 433, 434]
[332, 333, 435, 436]
[334, 335, 437, 438]
[336, 337, 439, 440]
[338, 339, 441, 442]
[340, 341, 443, 444]
[342, 343, 445, 446]
[344, 345, 447, 448]
[346, 347, 449, 450]
[348, 349, 451, 452]
[350, 351, 453, 454]
[352, 353, 455, 456]
[354, 355, 457, 458]
[356, 357, 459, 460]
[358, 359, 461, 462]
[360, 361, 463, 464]
[362, 363, 465, 466]
[364, 365, 467, 468]
[366, 367, 469, 470]
[368, 369, 471, 472]
[370, 371, 473, 474]
[372, 373, 475, 476]
[374, 375, 477, 478]
[376, 377, 479, 480]
[378, 379, 481, 482]
[380, 381, 483, 484]
[382, 383, 485, 486]
[384, 385, 487, 488]
[386, 387, 489, 490]
[388, 389, 491, 492]
[390, 391, 493, 494]
[392, 393, 495, 496]
[394, 395, 497, 498]
[396, 397, 499, 500]
[398, 399, 501, 502]
[400, 401, 503, 504]
[402, 403, 505, 506]
[404, 405, 507, 508]
[406, 407, 509, 510]
[408, 409, 511, 512]
[410, 411, 513, 514]
[412, 413, 515, 516]
[414, 415, 517, 518]
[416, 417, 519, 520]
[418, 419, 521, 522]
[420, 421, 523, 524]
[422, 423, 525, 526]
[424, 425, 527, 528]
[426, 427, 529, 530]
[428, 429, 531, 532]
[430, 431, 533, 534]
[432, 433, 535, 536]
[434, 435, 537, 538]
[436, 437, 539, 540]
[438, 439, 541, 542]
[440, 441, 543, 544]
[442, 443, 545, 546]
[444, 445, 547, 548]
[446, 447, 549, 550]
[448, 449, 551, 552]
[450, 451, 553, 554]
[452, 453, 555, 556]
[454, 455, 557, 558]
[456, 457, 559, 560]
[458, 459, 561, 562]
[460, 461, 563, 564]
[462, 463, 565, 566]
[464, 465, 567, 568]
[466, 467, 569, 570]
[468, 469, 571, 572]
[470, 471, 573, 574]
[472, 473, 575, 576]
[474, 475, 577, 578]
[476, 477, 579, 580]
[478, 581]
[479, 582]
[480, 481, 583, 584]
[482, 483, 585, 586]
[484, 485, 587, 588]
[486, 487, 589, 590]
[488, 489, 591, 592]
[490, 491, 593, 594]
[492, 493, 595, 596]
[494, 495, 597, 598]
[496, 497, 599, 600]
[498, 499, 601, 602]
[500, 501, 603, 604]
[502, 503, 605, 606]
[504, 505, 607, 608]
[506, 507, 609, 610]
[508, 509, 611, 612]
[510, 511, 613, 614]
[512, 513, 615, 616]
[514, 515, 617, 618]
[516, 517, 619, 620]
[518, 519, 621, 622]
[520, 521, 623, 624]
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