6 letter words:
woobut11,
woubit11,
burbot10,
rubbit10,
outrow9,
5 letter words:
fibro10,
fruit8,
wroot8,
bitou7,
bruit7,
buroo7,
oobit7,
orbit7,
oubit7,
robot7,
turbo7,
outro5,
4 letter words:
frow10,
woof10,
bowr9,
brow9,
bufo9,
forb9,
frib9,
boob8,
bubo8,
burb8,
foot7,
fort7,
four7,
frit7,
rift7,
roof7,
rowt7,
tofu7,
trow7,
turf7,
woot7,
wort7,
writ7,
biro6,
bito6,
boor6,
boot6,
bort6,
bout6,
brio6,
brit6,
broo6,
brut6,
obit6,
riot4,
root4,
roti4,
roto4,
rout4,
tiro4,
tori4,
toro4,
tour4,
trio4,
3 letter words:
wof9,
bow8,
fib8,
fob8,
fub8,
bib7,
bob7,
bub7,
fir6,
fit6,
for6,
fou6,
fro6,
fur6,
oft6,
oof6,
orf6,
owt6,
rif6,
row6,
tow6,
two6,
ufo6,
wit6,
woo6,
wot6,
bio5,
bit5,
boi5,
boo5,
bor5,
bot5,
bro5,
bru5,
bur5,
but5,
obi5,
obo5,
orb5,
rib5,
rob5,
rub5,
tub5,
urb5,
oor3,
oot3,
ort3,
our3,
out3,
rit3,
roo3,
rot3,
rut3,
too3,
tor3,
tui3,
2 letter words:
if5,
of5,
ow5,
wo5,
bi4,
bo4,
ob4,
io2,
it2,
oi2,
oo2,
or2,
ou2,
ti2,
to2,
ur2,
ut2,