5 letter words:
aband8,
banda8,
abuna7,
4 letter words:
band7,
baud7,
buda7,
bund7,
daub7,
buna6,
duan5,
nada5,
3 letter words:
bad6,
bud6,
dab6,
dub6,
aba5,
baa5,
ban5,
bun5,
nab5,
nub5,
and4,
dan4,
dun4,
ana3,
aua3,
2 letter words:
ab4,
ba4,
ad3,
da3,
aa2,
an2,
na2,
nu2,
un2,