5 letter words:
poufs10,
tofus8,
bouts7,
pouts7,
spout7,
stoup7,
4 letter words:
bosk10,
busk10,
kobs10,
kops10,
fobs9,
fops9,
fubs9,
pouf9,
bops8,
pubs8,
souk8,
tusk8,
soft7,
tofu7,
bots6,
bout6,
bust6,
buts6,
opts6,
opus6,
post6,
pots6,
pout6,
puts6,
soup6,
spot6,
stob6,
stop6,
stub6,
tops6,
tubs6,
tups6,
oust4,
outs4,
3 letter words:
kob9,
kop9,
fob8,
fop8,
fub8,
bop7,
kos7,
pub7,
suk7,
tsk7,
fou6,
oft6,
bos5,
bot5,
bus5,
but5,
ops5,
opt5,
pot5,
pst5,
pus5,
put5,
sob5,
sop5,
sub5,
sup5,
top5,
tub5,
tup5,
upo5,
ups5,
out3,
sot3,
sou3,
uts3,
2 letter words:
of5,
bo4,
op4,
up4,
os2,
so2,
to2,
us2,
ut2,