amfa[9], fama[9], abba[8], baba[8], amba[7], ameb[7],
haf[9], amf[8], fam[8], bab[7], efa[7], amb[6], bam[6], hem[6], aha[5], maa[4],
fa[6], ef[6], fe[6], hm[5], ba[4], be[4], ha[4], eh[4], he[4], ma[3], em[3], me[3], aa[2],
