5 letter words:
friar8,
4 letter words:
raff10,
riff10,
fair7,
faro7,
fiar7,
fora7,
orra4,
roar4,
3 letter words:
aff9,
iff9,
off9,
arf6,
far6,
fir6,
for6,
fro6,
oaf6,
rif6,
air3,
oar3,
ora3,
rai3,
ria3,
2 letter words:
fa5,
if5,
of5,
ai2,
ar2,
oi2,
or2,