6 letter words:
ripoff14,
5 letter words:
fifer11,
offer11,
4 letter words:
fief10,
fife10,
riff10,
prof9,
fire7,
fore7,
froe7,
reif7,
rife7,
peri6,
pier6,
pore6,
repo6,
ripe6,
rope6,
3 letter words:
eff9,
iff9,
off9,
fop8,
fer6,
fie6,
fir6,
foe6,
for6,
fro6,
ref6,
rif6,
ope5,
per5,
pie5,
poi5,
pro5,
rep5,
rip5,
ire3,
ore3,
rei3,
roe3,
2 letter words:
ef5,
fe5,
if5,
of5,
op4,
pe4,
pi4,
er2,
oe2,
oi2,
or2,
re2,