7 letter words:
effects15,
6 letter words:
effect14,
5 letter words:
teffs11,
feces10,
fetes8,
cetes7,
4 letter words:
effs10,
teff10,
efts7,
fees7,
feet7,
fest7,
fete7,
fets7,
tefs7,
cees6,
cete6,
sect6,
tecs6,
tees4,
3 letter words:
eff9,
efs6,
eft6,
fee6,
fes6,
fet6,
tef6,
cee5,
sec5,
tec5,
est3,
see3,
set3,
tee3,
tes3,
2 letter words:
ef5,
fe5,
ee2,
es2,
et2,
st2,
te2,