5 letter words:
bunas7,
4 letter words:
bans6,
buna6,
buns6,
nabs6,
nubs6,
snab6,
snub6,
suba6,
anus4,
3 letter words:
abs5,
ban5,
bas5,
bun5,
bus5,
nab5,
nub5,
sab5,
sub5,
nas3,
nus3,
san3,
sau3,
sun3,
uns3,
2 letter words:
ab4,
ba4,
an2,
as2,
na2,
nu2,
un2,
us2,