7 letter words:
freezer19,
6 letter words:
freeze18,
reefer9,
5 letter words:
feeze17,
freer8,
frere8,
refer8,
4 letter words:
fere7,
fern7,
free7,
reef7,
erne4,
3 letter words:
fez15,
zee12,
fee6,
fen6,
fer6,
ref6,
ere3,
ern3,
err3,
nee3,
ree3,
2 letter words:
ef5,
fe5,
en2,
er2,
ne2,
re2,