7 letter words:
bugwort13,
outgrow11,
6 letter words:
woobut11,
burgoo9,
outrow9,
5 letter words:
borgo8,
bourg8,
wroot8,
buroo7,
robot7,
turbo7,
grout6,
outgo6,
trugo6,
outro5,
4 letter words:
bowr9,
brow9,
grow8,
brog7,
burg7,
gobo7,
grub7,
rowt7,
trow7,
woot7,
wort7,
boor6,
boot6,
bort6,
bout6,
broo6,
brut6,
goor5,
gout5,
grot5,
trog5,
trug5,
root4,
roto4,
rout4,
toro4,
tour4,
3 letter words:
bow8,
wog7,
bog6,
bug6,
gob6,
gub6,
owt6,
row6,
tow6,
two6,
woo6,
wot6,
boo5,
bor5,
bot5,
bro5,
bru5,
bur5,
but5,
obo5,
orb5,
rob5,
rub5,
tub5,
urb5,
goo4,
gor4,
got4,
gur4,
gut4,
rug4,
tog4,
tug4,
oor3,
oot3,
ort3,
our3,
out3,
roo3,
rot3,
rut3,
too3,
tor3,
2 letter words:
ow5,
wo5,
bo4,
ob4,
go3,
gu3,
ug3,
oo2,
or2,
ou2,
to2,
ur2,
ut2,