abba[8], baba[8], babi[8], biba[8], baja[8], bija[8], abbo[8], babo[8], boba[8], obab[8], bibo[8], bajo[8], boja[8], obaj[8], obij[8], jiao[6],
bab[7], bib[7], baj[7], bij[7], bob[7], boj[7], job[7], bai[5], aja[5], abo[5], boa[5], oba[5], boi[5], obi[5],
ba[4], bi[4], aj[4], ja[4], bo[4], oj[4], aa[2],
