5 letter words:
doubt8,
about7,
4 letter words:
baud7,
daub7,
abut6,
boat6,
bota6,
bout6,
tabu6,
tuba6,
data5,
dato5,
daut5,
doat5,
toad5,
auto4,
3 letter words:
bad6,
bod6,
bud6,
dab6,
dub6,
aba5,
abo5,
baa5,
bat5,
boa5,
bot5,
but5,
oba5,
tab5,
tub5,
ado4,
dot4,
duo4,
oda4,
oud4,
tad4,
tod4,
udo4,
oat3,
out3,
tao3,
tau3,
uta3,
2 letter words:
ab4,
ba4,
bo4,
ad3,
do3,
od3,
aa2,
at2,
ta2,
to2,
ut2,