beko[7], kobo[7], obok[7], beks[7], boks[7], bose[6], boso[6], esek[5], esko[5], kose[5], koso[5], osok[5],
bek[6], bok[6], bee[5], eko[4], oko[4], eks[4], kos[4], sok[4], oso[3],
be[4], bo[4], ko[3], ok[3], ee[2], eo[2], es[2], se[2], os[2],
