byku[10], kuby[10], buki[9], ubki[9], boku[9], boyu[9], kuki[8], uboi[8], koku[8], byki[8], yuko[8], boki[7], ukoi[7], koki[6],
buk[8], kub[8], kuk[7], obu[7], byk[7], kyu[7], bok[6], oku[6], boy[6], oby[6], boi[5], obi[5], kok[5], kio[4], koi[4],
bu[6], ku[5], by[5], bi[4], bo[4], ki[3], ko[3], ok[3],
