6 letter words:
frieze18,
heifer12,
5 letter words:
hiree8,
4 letter words:
friz16,
fere7,
fire7,
free7,
heir7,
here7,
hire7,
reef7,
reif7,
rife7,
3 letter words:
fez15,
fiz15,
zee12,
feh9,
fee6,
fer6,
fie6,
fir6,
her6,
hie6,
ref6,
rif6,
ere3,
ire3,
ree3,
rei3,
2 letter words:
ef5,
eh5,
fe5,
he5,
hi5,
if5,
er2,
re2,