4 letter words:
help9,
pelf9,
enuf7,
flue7,
fuel7,
pule6,
lune4,
3 letter words:
feh9,
hep8,
hup8,
peh8,
elf6,
fen6,
feu6,
flu6,
fun6,
hen6,
hue6,
hun6,
pen5,
pul5,
pun5,
leu3,
2 letter words:
ef5,
eh5,
fe5,
he5,
uh5,
pe4,
up4,
el2,
en2,
ne2,
nu2,
un2,