6 letter words:
frenum11,
crumen10,
5 letter words:
femur10,
fumer10,
rumen7,
4 letter words:
curf9,
ferm9,
fume9,
crem8,
merc8,
enuf7,
fern7,
crue6,
cure6,
curn6,
ecru6,
menu6,
mure6,
neum6,
rume6,
unce6,
rune4,
3 letter words:
fem8,
fum8,
cum7,
erf6,
fen6,
fer6,
feu6,
fun6,
fur6,
nef6,
ref6,
cru5,
cue5,
cur5,
ecu5,
emu5,
men5,
meu5,
mun5,
rec5,
rem5,
ruc5,
rum5,
umu5,
ern3,
nur3,
ren3,
rue3,
run3,
ure3,
urn3,
2 letter words:
ef5,
fe5,
em4,
me4,
mu4,
um4,
en2,
er2,
ne2,
nu2,
re2,
un2,
ur2,