hip[6], phi[6], hop[6], aha[5], bai[5], hai[5], abo[5], boa[5], oba[5], hao[5], boi[5], obi[5], hoi[5], pai[4], pia[4], poi[4],
ba[4], ha[4], bi[4], hi[4], bo[4], ho[4], oh[4], pa[3], pi[3], op[3], po[3], aa[2],
