13 letter words:
circumference24,
8 letter words:
crucifer15,
ecumenic14,
mercuric14,
reremice12,
meuniere10,
7 letter words:
fiercer12,
firemen12,
freemen12,
refence12,
cerumen11,
eccrine11,
numeric11,
fernier10,
reefier10,
refiner10,
eremuri9,
murrine9,
reincur9,
6 letter words:
fencer11,
ferric11,
ferrum11,
fierce11,
firmer11,
frenum11,
fumier11,
cerium10,
crinum10,
icemen10,
mercer10,
mincer10,
neumic10,
uremic10,
ferine9,
reefer9,
refine9,
refire9,
unfree9,
currie8,
ermine8,
murein8,
murine8,
eerier6,
ruiner6,
5 letter words:
cecum11,
femur10,
fence10,
fermi10,
fumer10,
cerci9,
ceric9,
creme9,
crime9,
cumin9,
emcee9,
mince9,
mucin9,
recce9,
finer8,
firer8,
freer8,
frere8,
frier8,
infer8,
refer8,
rifer8,
crier7,
curer7,
curie7,
emeer7,
incur7,
merer7,
miner7,
murre7,
neume7,
nicer7,
niece7,
recur7,
ricer7,
rimer7,
rumen7,
runic7,
ureic7,
eerie5,
enure5,
inure5,
rerun5,
urine5,
4 letter words:
cuif9,
curf9,
feme9,
fice9,
firm9,
fuci9,
fume9,
emic8,
merc8,
mice8,
enuf7,
fere7,
fern7,
fine7,
fire7,
firn7,
free7,
neif7,
reef7,
reif7,
rife7,
cere6,
cine6,
cire6,
cure6,
curn6,
curr6,
ecru6,
emeu6,
emir6,
menu6,
mere6,
mien6,
mine6,
mire6,
muni6,
mure6,
murr6,
neem6,
neum6,
nice6,
rice6,
rime6,
unci6,
uric6,
erne4,
rein4,
ruer4,
ruin4,
rune4,
3 letter words:
fem8,
cum7,
mic7,
fee6,
fen6,
fer6,
feu6,
fie6,
fin6,
fir6,
fun6,
fur6,
ref6,
rif6,
cee5,
cru5,
cue5,
cur5,
ecu5,
eme5,
emu5,
ice5,
men5,
mir5,
mun5,
nim5,
rec5,
rem5,
rim5,
rum5,
ere3,
ern3,
err3,
ire3,
nee3,
ree3,
rei3,
rin3,
rue3,
run3,
urn3,
2 letter words:
ef5,
fe5,
if5,
em4,
me4,
mi4,
mu4,
um4,
en2,
er2,
in2,
ne2,
nu2,
re2,
un2,
