5 letter words:
finer8,
infer8,
crine7,
cunei7,
curie7,
incur7,
nicer7,
runic7,
ureic7,
inure5,
urine5,
4 letter words:
cuif9,
curf9,
fice9,
fuci9,
enuf7,
feni7,
fern7,
fier7,
fine7,
fire7,
firn7,
neif7,
nief7,
nife7,
reif7,
rife7,
cine6,
cire6,
crue6,
cure6,
curn6,
ecru6,
eric6,
icer6,
nice6,
rice6,
unce6,
unci6,
uric6,
iure4,
rein4,
rine4,
ruin4,
rune4,
3 letter words:
erf6,
fen6,
fer6,
feu6,
fie6,
fin6,
fir6,
fun6,
fur6,
nef6,
ref6,
rif6,
cru5,
cue5,
cur5,
ecu5,
ice5,
rec5,
ruc5,
ern3,
ire3,
nie3,
nur3,
rei3,
ren3,
rin3,
rue3,
run3,
uni3,
ure3,
urn3,
2 letter words:
ef5,
fe5,
if5,
en2,
er2,
in2,
ne2,
nu2,
re2,
un2,
ur2,