7 letter words:
foxfire20,
6 letter words:
forfex19,
foxier16,
orifex16,
5 letter words:
fixer15,
forex15,
foxie15,
refix15,
fifer11,
offer11,
reffo11,
4 letter words:
oxer11,
fief10,
fife10,
riff10,
fier7,
fire7,
fore7,
froe7,
orfe7,
reif7,
rife7,
3 letter words:
fix13,
fox13,
exo10,
rex10,
eff9,
iff9,
off9,
erf6,
fer6,
fie6,
fir6,
foe6,
for6,
fro6,
orf6,
ref6,
rif6,
ire3,
ore3,
rei3,
reo3,
roe3,
2 letter words:
ex9,
ox9,
xi9,
ef5,
fe5,
if5,
of5,
er2,
io2,
oe2,
oi2,
or2,
re2,