5 letter words:
kerel9,
fleer8,
refel8,
4 letter words:
keef11,
kerf11,
keel8,
leek8,
leke8,
reek8,
reke8,
feel7,
feer7,
fere7,
flee7,
free7,
reef7,
leer4,
lere4,
reel4,
3 letter words:
kef10,
eek7,
eke7,
elk7,
erk7,
lek7,
elf6,
erf6,
fee6,
fer6,
ref6,
eel3,
ere3,
lee3,
ree3,
2 letter words:
ef5,
fe5,
ee2,
el2,
er2,
re2,