byku[10], kuby[10], baku[9], buka[9], ubka[9], byka[8], abak[7], baka[7],
buk[8], kub[8], byk[7], kyu[7], bak[6], aby[6], aua[5], aaa[3],
bu[6], ku[5], by[5], ba[4], au[4], ka[3], aa[2],
