7 letter words:
flipper14,
6 letter words:
fipple13,
pilfer11,
lipper10,
ripple10,
5 letter words:
piper9,
filer8,
flier8,
lifer8,
rifle8,
peril7,
plier7,
4 letter words:
flip9,
pelf9,
perp8,
pipe8,
prep8,
repp8,
file7,
fire7,
flir7,
lief7,
life7,
reif7,
rife7,
lipe6,
peri6,
pier6,
pile6,
plie6,
ripe6,
lier4,
lire4,
riel4,
rile4,
3 letter words:
pep7,
pip7,
elf6,
fer6,
fie6,
fil6,
fir6,
ref6,
rif6,
lip5,
per5,
pie5,
rep5,
rip5,
ire3,
lei3,
lie3,
rei3,
2 letter words:
ef5,
fe5,
if5,
pe4,
pi4,
el2,
er2,
li2,
re2,