abba[8], baba[8], babi[8], biba[8], bada[7], bida[7], abat[7], bata[7], bita[7], adat[6], data[6],
bab[7], bib[7], bad[6], dba[6], bid[6], bat[6], tab[6], bit[6], bai[5], dat[5], dit[5], ata[4], tai[4],
ba[4], bi[4], ad[3], da[3], id[3], at[3], ta[3], aa[2],
