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