5 letter words:
fiere8,
4 letter words:
feer7,
fere7,
fier7,
fire7,
fore7,
free7,
froe7,
orfe7,
reef7,
reif7,
rife7,
3 letter words:
erf6,
fee6,
fer6,
fie6,
fir6,
foe6,
for6,
fro6,
orf6,
ref6,
rif6,
ere3,
ire3,
ore3,
ree3,
rei3,
reo3,
roe3,
2 letter words:
ef5,
fe5,
if5,
of5,
ee2,
er2,
io2,
oe2,
oi2,
or2,
re2,