byka[8], abak[7], baka[7], bako[7], boya[7], okay[6],
byk[7], bak[6], bok[6], aby[6], boy[6], oby[6], abo[5], boa[5], oba[5], oka[4],
by[5], ba[4], bo[4], ka[3], ko[3], ok[3], aa[2],
