5 letter words:
fibro10,
proof10,
oribi7,
poori7,
4 letter words:
roji11,
forb9,
frib9,
poof9,
prof9,
prob8,
roof7,
biro6,
boor6,
brio6,
broo6,
poor6,
proo6,
roop6,
3 letter words:
jib12,
job12,
jor10,
fib8,
fob8,
fop8,
bop7,
fir6,
for6,
fro6,
oof6,
orf6,
rif6,
bio5,
boi5,
boo5,
bor5,
bro5,
obi5,
obo5,
oop5,
orb5,
pir5,
poi5,
poo5,
pro5,
rib5,
rip5,
rob5,
oor3,
roo3,
2 letter words:
jo9,
if5,
of5,
bi4,
bo4,
ob4,
op4,
pi4,
po4,
io2,
oi2,
oo2,
or2,