6 letter words:
unfair9,
anuric8,
uranic8,
5 letter words:
farci10,
finca10,
franc10,
furan8,
infra8,
auric7,
cairn7,
curia7,
incur7,
naric7,
runic7,
uncia7,
nairu5,
4 letter words:
cuif9,
curf9,
fuci9,
fain7,
fair7,
faun7,
fiar7,
firn7,
naif7,
cain6,
carn6,
curn6,
narc6,
unci6,
uric6,
airn4,
rain4,
rani4,
ruin4,
unai4,
3 letter words:
arf6,
fan6,
far6,
fin6,
fir6,
fun6,
fur6,
rif6,
arc5,
can5,
car5,
cru5,
cur5,
ain3,
air3,
ani3,
rai3,
ran3,
ria3,
rin3,
run3,
urn3,
2 letter words:
fa5,
if5,
ai2,
an2,
ar2,
in2,
na2,
nu2,
un2,