5 letter words:
fests8,
fosse8,
softs8,
toses5,
4 letter words:
efts7,
fess7,
fest7,
fets7,
foes7,
foss7,
soft7,
tefs7,
ests4,
oses4,
sets4,
sots4,
toes4,
tose4,
toss4,
3 letter words:
efs6,
eft6,
fes6,
fet6,
foe6,
oft6,
tef6,
ess3,
est3,
oes3,
ose3,
set3,
sos3,
sot3,
tes3,
toe3,
2 letter words:
ef5,
fe5,
of5,
es2,
et2,
oe2,
os2,
so2,
st2,
te2,
to2,