6 letter words:
effeir12,
preife11,
priefe11,
5 letter words:
fifer11,
preif10,
prief10,
fiere8,
4 letter words:
fief10,
fife10,
riff10,
feer7,
fere7,
fier7,
fire7,
free7,
reef7,
reif7,
rife7,
peer6,
pere6,
peri6,
pier6,
pree6,
ripe6,
3 letter words:
eff9,
iff9,
erf6,
fee6,
fer6,
fie6,
fir6,
ref6,
rif6,
pee5,
per5,
pie5,
pir5,
pre5,
rep5,
rip5,
ere3,
ire3,
ree3,
rei3,
2 letter words:
ef5,
fe5,
if5,
pe4,
pi4,
ee2,
er2,
re2,