6 letter words:
puffer14,
5 letter words:
ruffe11,
prune7,
4 letter words:
puff12,
ruff10,
enuf7,
fern7,
pure6,
rune4,
3 letter words:
eff9,
fen6,
fer6,
feu6,
fun6,
fur6,
ref6,
pen5,
per5,
pun5,
pur5,
rep5,
urp5,
ern3,
rue3,
run3,
urn3,
2 letter words:
ef5,
fe5,
pe4,
up4,
en2,
er2,
ne2,
nu2,
re2,
un2,