byki[8], beki[7], beko[7], boki[7], boye[7], obie[6], okey[6],
byk[7], bek[6], bok[6], boy[6], oby[6], boi[5], obi[5], kei[4], kie[4], eko[4], kio[4], koi[4],
by[5], be[4], bi[4], bo[4], ki[3], ko[3], ok[3], eo[2],
