5 letter words:
abuna7,
abune7,
4 letter words:
abba8,
abbe8,
baba8,
babe8,
babu8,
buba8,
bane6,
bean6,
beau6,
buna6,
nabe6,
unbe6,
aune4,
3 letter words:
abb7,
bub7,
ebb7,
aba5,
baa5,
ban5,
ben5,
bun5,
nab5,
neb5,
nub5,
ana3,
ane3,
aua3,
aue3,
ean3,
eau3,
nae3,
2 letter words:
ab4,
ba4,
be4,
aa2,
ae2,
an2,
ea2,
en2,
na2,
ne2,
nu2,
un2,