5 letter words:
fossa8,
sofas8,
assai5,
oasis5,
ossia5,
4 letter words:
offs10,
foss7,
oafs7,
sofa7,
ossa4,
3 letter words:
aff9,
iff9,
off9,
fas6,
ifs6,
oaf6,
aas3,
ais3,
ass3,
sis3,
sos3,
2 letter words:
fa5,
if5,
of5,
aa2,
ai2,
as2,
is2,
oi2,
os2,
si2,
so2,