4 letter words:
flip9,
flop9,
pelf9,
file7,
filo7,
floe7,
foil7,
lief7,
life7,
lipe6,
lope6,
pile6,
plie6,
pole6,
3 letter words:
fop8,
elf6,
fie6,
fil6,
foe6,
lip5,
lop5,
ope5,
pie5,
poi5,
pol5,
lei3,
lie3,
oil3,
ole3,
2 letter words:
ef5,
fe5,
if5,
of5,
op4,
pe4,
pi4,
el2,
li2,
lo2,
oe2,
oi2,