bece[7], biec[7], obce[7], bite[7], beto[7], biot[7], bito[7], obie[6], tece[6], tice[6], ocet[6], ciot[6], cito[6], tico[6], ecie[5],
cob[6], bet[6], bit[6], bot[6], bee[5], boi[5], obi[5], cie[4], eto[4], toi[4],
be[4], bi[4], bo[4], ce[3], ci[3], co[3], et[3], te[3], ot[3], to[3], ee[2], eo[2],