byki[8], boki[7], kobo[7], obok[7], koki[6], oboi[6], koko[6],
byk[7], bok[6], boy[6], oby[6], boi[5], obi[5], kok[5], kio[4], koi[4], oko[4],
by[5], bi[4], bo[4], ki[3], ko[3], ok[3],
