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