bita[7], bota[7], biot[7], bito[7],
bat[6], tab[6], bit[6], bot[6], bai[5], abo[5], boa[5], oba[5], boi[5], obi[5], tai[4], tao[4], toi[4],
ba[4], bi[4], bo[4], at[3], ta[3], ot[3], to[3],
