6 letter words:
fibril11,
5 letter words:
fibro10,
floor8,
folio8,
broil7,
brool7,
libri7,
oboli7,
oribi7,
4 letter words:
forb9,
frib9,
filo7,
flir7,
flor7,
foil7,
fool7,
loof7,
rolf7,
roof7,
birl6,
biro6,
boil6,
bolo6,
bool6,
boor6,
brio6,
broo6,
lobi6,
lobo6,
obol6,
liri4,
loir4,
loor4,
olio4,
roil4,
3 letter words:
fib8,
fob8,
fil6,
fir6,
for6,
fro6,
oof6,
orf6,
rif6,
bio5,
boi5,
boo5,
bor5,
bro5,
lib5,
lob5,
obi5,
obo5,
orb5,
rib5,
rob5,
loo3,
lor3,
oil3,
oor3,
roo3,
2 letter words:
if5,
of5,
bi4,
bo4,
ob4,
io2,
li2,
lo2,
oi2,
oo2,
or2,