6 letter words:
fearer9,
5 letter words:
farer8,
freer8,
frere8,
refer8,
4 letter words:
raff10,
fare7,
fear7,
fere7,
frae7,
free7,
reef7,
rare4,
rear4,
3 letter words:
aff9,
eff9,
arf6,
far6,
fee6,
fer6,
ref6,
are3,
ear3,
era3,
ere3,
err3,
ree3,
2 letter words:
ef5,
fa5,
fe5,
ae2,
ar2,
er2,
re2,