buki[9], ubki[9], boku[9], uboi[8], boki[7], ukoi[7],
buk[8], kub[8], obu[7], bok[6], oku[6], boi[5], obi[5], kii[4], kio[4], koi[4],
bu[6], ku[5], bi[4], bo[4], ki[3], ko[3], ok[3], ii[2],
