length n = 231
dimension k = 8
alphabet length q = 3

minimum distance d = 144

generator matrix:
000000010000000100000000000000000000000000000000000000000011111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111110
000000100000001000000011111111111111111111111111111111111100000000000000000000000000000000000011111111111111111111111111111111111111111122222222222222222222222222222222222222222222222211111111221111112211111111111122222222222222221
000001000000010011111100000011111111111111222222222222222200000011111111111111222222222222222200000000000000111111111111222222222222222200000000000000001111111111111111222222222222222211111112121111121211112222222211111111222222220
000010000000100011222211112200111112222222000011111222222211112200111112222222000011111222222200001112222222000001112222000001111112222200111111122222220000000111122222000000011111222211111121121111211212221112222211122222111112222
000100000001000012122212221222011120111222112201222000111212221211012220111222112200012011122211220120111222002220220002111220001120001222000111201112220011122011200012001122201222000111111211121112111222221221112212211122112221122
001000000010000022112211222211202201012012121212112112002221221212120112002012121112220211201222122011012001120222021120012000120010221212112022110121222201112002001200121201210002001011112111121121111221222121221221212212221121112
010000000100000021111221121112120222120200212211012121122012122221221021121202221211201101210012122221200121222010000211101122200201020011122101022102011220200120110002121220110020122011121111121211111222122222121122121221121211211
100000001000000011212122121221222011201212112120100122120121121122202201210210121221211210022121221202121120211102202000220121012001200012212210122020101212012200011210110012001200210211211111122111111222212212212122222111212112111

by adding the parity bit to 230