8 letter words:
fingerer12,
7 letter words:
reffing14,
feigner11,
freeing11,
reefing11,
fernier10,
refiner10,
6 letter words:
griffe13,
niffer12,
feeing10,
finger10,
fringe10,
ferine9,
refine9,
refire9,
erring7,
ringer7,
5 letter words:
griff12,
fifer11,
feign9,
grief9,
finer8,
firer8,
freer8,
frere8,
frier8,
infer8,
refer8,
rifer8,
genie6,
genre6,
green6,
reign6,
renig6,
rerig6,
4 letter words:
fief10,
fife10,
riff10,
frig8,
fere7,
fern7,
fine7,
fire7,
firn7,
free7,
neif7,
reef7,
reif7,
rife7,
eger5,
gene5,
gien5,
girn5,
gree5,
grin5,
ring5,
erne4,
rein4,
3 letter words:
eff9,
iff9,
fig7,
fee6,
fen6,
fer6,
fie6,
fin6,
fir6,
ref6,
rif6,
eng4,
erg4,
gee4,
gen4,
gie4,
gin4,
neg4,
reg4,
rig4,
ere3,
ern3,
err3,
ire3,
nee3,
ree3,
rei3,
rin3,
2 letter words:
ef5,
fe5,
if5,
en2,
er2,
in2,
ne2,
re2,