abba[8], baba[8], babi[8], biba[8], abbo[8], babo[8], boba[8], obab[8], bibo[8], opia[5],
bab[7], bib[7], bob[7], bai[5], abo[5], boa[5], oba[5], boi[5], obi[5], pai[4], pia[4], poi[4], aaa[3],
ba[4], bi[4], bo[4], pa[3], pi[3], op[3], po[3], aa[2],
