5 letter words:
spiff13,
fiefs11,
fifes11,
epees7,
peise7,
geese6,
siege6,
4 letter words:
effs10,
fief10,
fife10,
figs8,
fees7,
gips7,
pegs7,
pigs7,
seif7,
epee6,
pees6,
pies6,
seep6,
sipe6,
egis5,
gees5,
gies5,
3 letter words:
eff9,
iff9,
fig7,
efs6,
fee6,
fes6,
fie6,
gip6,
ifs6,
peg6,
pig6,
pee5,
pes5,
pie5,
pis5,
psi5,
sip5,
gee4,
gie4,
seg4,
see3,
sei3,
2 letter words:
ef5,
fe5,
if5,
pe4,
pi4,
es2,
is2,
si2,