piat[6], pita[6], opat[6], pito[6], topi[6], opia[5],
pat[5], pit[5], pot[5], top[5], pai[4], pia[4], poi[4], tai[4], tao[4], toi[4],
pa[3], pi[3], op[3], po[3], at[3], ta[3], ot[3], to[3],
