dang[5], gand[5], gnad[5], agas[5], saga[5], gans[5], sang[5], sand[4],
aga[4], nag[4], gas[4], sag[4], dan[3], aas[3], das[3], ans[3],
aa[2], ad[2], da[2], an[2], na[2], as[2],