5 letter words:
frena8,
4 letter words:
fane7,
fare7,
fear7,
fern7,
frae7,
earn4,
near4,
3 letter words:
arf6,
fan6,
far6,
fen6,
fer6,
ref6,
ane3,
are3,
ear3,
era3,
ern3,
nae3,
ran3,
2 letter words:
ef5,
fa5,
fe5,
ae2,
an2,
ar2,
en2,
er2,
na2,
ne2,
re2,