6 letter words:
fluent9,
unfelt9,
penult8,
5 letter words:
flute8,
letup7,
lunet5,
unlet5,
4 letter words:
pelf9,
enuf7,
felt7,
flue7,
fuel7,
left7,
lept6,
pelt6,
pent6,
pule6,
punt6,
lent4,
lune4,
lunt4,
lute4,
tule4,
tune4,
3 letter words:
eft6,
elf6,
fen6,
fet6,
feu6,
flu6,
fun6,
pen5,
pet5,
pul5,
pun5,
put5,
tup5,
let3,
leu3,
net3,
nut3,
tel3,
ten3,
tun3,
ute3,
2 letter words:
ef5,
fe5,
pe4,
up4,
el2,
en2,
et2,
ne2,
nu2,
un2,
ut2,