opia[5], zipa[5], poza[5], pozo[5], pizz[5], oaza[4], oazo[4], ozoi[4],
pai[4], pia[4], poi[4], zip[4], oaz[3], zoo[3], zza[3],
pa[3], pi[3], op[3], po[3], aa[2], ii[2], za[2], oz[2],
