6 letter words:
furane9,
5 letter words:
feuar8,
frena8,
furan8,
4 letter words:
enuf7,
fane7,
fare7,
faun7,
fear7,
fern7,
frae7,
earn4,
near4,
rune4,
urea4,
3 letter words:
arf6,
fan6,
far6,
fen6,
fer6,
feu6,
fun6,
fur6,
ref6,
ane3,
are3,
ear3,
eau3,
era3,
ern3,
nae3,
ran3,
rue3,
run3,
urn3,
2 letter words:
ef5,
fa5,
fe5,
ae2,
an2,
ar2,
en2,
er2,
na2,
ne2,
nu2,
re2,
un2,