7 letter words:
futural10,
tubular9,
6 letter words:
tubful11,
artful9,
brutal8,
5 letter words:
fubar10,
fault8,
blurt7,
tubal7,
ultra5,
4 letter words:
barf9,
flab9,
flub9,
farl7,
fart7,
flat7,
frat7,
furl7,
raft7,
tufa7,
turf7,
abut6,
blat6,
blur6,
brat6,
brut6,
bura6,
burl6,
tabu6,
tuba6,
latu4,
luau4,
3 letter words:
fab8,
fub8,
aft6,
arf6,
far6,
fat6,
flu6,
fur6,
alb5,
arb5,
bal5,
bar5,
bat5,
bra5,
bur5,
but5,
lab5,
rub5,
tab5,
tub5,
urb5,
alt3,
art3,
lar3,
lat3,
rat3,
rut3,
tar3,
tau3,
ulu3,
uta3,
2 letter words:
fa5,
ab4,
ba4,
al2,
ar2,
at2,
la2,
ta2,
ut2,