beku[9], ubek[9], boku[9], beko[7], kobo[7], obok[7],
buk[8], kub[8], obu[7], bek[6], bok[6], oku[6], eko[4], oko[4],
bu[6], ku[5], be[4], bo[4], ko[3], ok[3], eo[2],
