5 letter words:
proof10,
poori7,
prior7,
4 letter words:
poof9,
prof9,
roof7,
poor6,
proo6,
roop6,
3 letter words:
fop8,
fir6,
for6,
fro6,
oof6,
orf6,
rif6,
oop5,
pir5,
poi5,
poo5,
pro5,
rip5,
oor3,
roo3,
2 letter words:
if5,
of5,
op4,
pi4,
po4,
io2,
oi2,
oo2,
or2,