6 letter words:
frieze18,
prefix18,
expire15,
feirie9,
5 letter words:
prize16,
fixer15,
refix15,
pixie14,
4 letter words:
friz16,
prez15,
prex13,
fere7,
fire7,
free7,
reef7,
reif7,
rife7,
peer6,
pere6,
peri6,
pier6,
pree6,
ripe6,
3 letter words:
fez15,
fiz15,
zep14,
zip14,
fix13,
pix12,
zee12,
rex10,
fee6,
fer6,
fie6,
fir6,
ref6,
rif6,
pee5,
per5,
pie5,
rep5,
rip5,
ere3,
ire3,
ree3,
rei3,
2 letter words:
ex9,
xi9,
ef5,
fe5,
if5,
pe4,
pi4,
er2,
re2,