abba[8], baba[8], babi[8], biba[8], bawi[6], wabi[6], pawi[5], piwa[5],
bab[7], bib[7], bai[5], baw[5], wab[5], pai[4], pia[4], paw[4], piw[4], iwa[3], wii[3],
ba[4], bi[4], pa[3], pi[3], aa[2], ii[2], iw[2],
