7 letter words:
fermium14,
rimfire12,
rummier11,
6 letter words:
ferrum11,
firmer11,
fumier11,
immure10,
rimmer10,
rummer10,
mirier8,
rimier8,
5 letter words:
femur10,
fermi10,
fumer10,
mimer9,
firer8,
frier8,
rifer8,
murre7,
rimer7,
4 letter words:
firm9,
fume9,
mime8,
fire7,
reif7,
rife7,
emir6,
mire6,
miri6,
mure6,
murr6,
rime6,
ruer4,
3 letter words:
fem8,
mem7,
mim7,
mum7,
umm7,
fer6,
feu6,
fie6,
fir6,
fur6,
ref6,
rif6,
emu5,
mir5,
rem5,
rim5,
rum5,
err3,
ire3,
rei3,
rue3,
2 letter words:
mm6,
ef5,
fe5,
if5,
em4,
me4,
mi4,
mu4,
um4,
er2,
re2,