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