5 letter words:
ruffs11,
fours8,
roofs8,
4 letter words:
offs10,
ruff10,
four7,
fous7,
fros7,
furs7,
oofs7,
orfs7,
roof7,
surf7,
ufos7,
ours4,
roos4,
sour4,
3 letter words:
off9,
for6,
fou6,
fro6,
fur6,
oof6,
orf6,
ufo6,
oor3,
oos3,
ors3,
our3,
ous3,
roo3,
sou3,
sur3,
2 letter words:
of5,
oo2,
or2,
os2,
ou2,
so2,
ur2,
us2,