9 letter words:
fripperer16,
7 letter words:
fripper14,
prefire12,
perrier9,
6 letter words:
prefer11,
preife11,
priefe11,
ripper10,
refire9,
5 letter words:
preif10,
prief10,
piper9,
ferer8,
fiere8,
firer8,
freer8,
frere8,
frier8,
refer8,
rifer8,
prier7,
riper7,
4 letter words:
peep8,
perp8,
pipe8,
prep8,
repp8,
ripp8,
feer7,
fere7,
fier7,
fire7,
free7,
reef7,
reif7,
rife7,
peer6,
pere6,
peri6,
pier6,
pree6,
ripe6,
3 letter words:
pep7,
pip7,
erf6,
fee6,
fer6,
fie6,
fir6,
ref6,
rif6,
pee5,
per5,
pie5,
pir5,
pre5,
rep5,
rip5,
ere3,
err3,
ire3,
ree3,
rei3,
2 letter words:
ef5,
fe5,
if5,
pe4,
pi4,
ee2,
er2,
re2,
