6 letter words:
pilfer11,
5 letter words:
kefir12,
piker11,
preif10,
prief10,
liker9,
filer8,
flier8,
lifer8,
rifle8,
peril7,
piler7,
plier7,
4 letter words:
fike11,
firk11,
kerf11,
kief11,
kelp10,
kepi10,
kilp10,
kipe10,
perk10,
pike10,
flip9,
pelf9,
keir8,
kier8,
like8,
lirk8,
reik8,
fier7,
file7,
fire7,
flir7,
lief7,
life7,
reif7,
rife7,
lerp6,
lipe6,
peri6,
pier6,
pile6,
pirl6,
plie6,
ripe6,
leir4,
lier4,
lire4,
riel4,
rile4,
3 letter words:
kef10,
kif10,
kep9,
kip9,
eik7,
elk7,
erk7,
ilk7,
irk7,
kir7,
lek7,
elf6,
erf6,
fer6,
fie6,
fil6,
fir6,
ref6,
rif6,
lep5,
lip5,
per5,
pie5,
pir5,
pre5,
rep5,
rip5,
ire3,
lei3,
lie3,
rei3,
2 letter words:
ki6,
ef5,
fe5,
if5,
pe4,
pi4,
el2,
er2,
li2,
re2,