7 letter words:
unifier10,
6 letter words:
unific11,
irenic8,
5 letter words:
ficin10,
finer8,
infer8,
curie7,
icier7,
incur7,
nicer7,
ricin7,
runic7,
ureic7,
inure5,
urine5,
4 letter words:
cuif9,
curf9,
fice9,
fuci9,
enuf7,
fern7,
fine7,
fire7,
firn7,
neif7,
reif7,
rife7,
cine6,
cire6,
cure6,
curn6,
ecru6,
nice6,
rice6,
unci6,
uric6,
rein4,
ruin4,
rune4,
3 letter words:
fen6,
fer6,
feu6,
fie6,
fin6,
fir6,
fun6,
fur6,
ref6,
rif6,
cru5,
cue5,
cur5,
ecu5,
ice5,
rec5,
ern3,
ire3,
rei3,
rin3,
rue3,
run3,
urn3,
2 letter words:
ef5,
fe5,
if5,
en2,
er2,
in2,
ne2,
nu2,
re2,
un2,