5 letter words:
blini7,
broil7,
inorb7,
libri7,
oribi7,
robin7,
4 letter words:
birl6,
biro6,
blin6,
boil6,
born6,
brin6,
brio6,
lobi6,
inro4,
iron4,
lino4,
lion4,
liri4,
loin4,
loir4,
lorn4,
nirl4,
noil4,
noir4,
nori4,
roil4,
roin4,
3 letter words:
bin5,
bio5,
boi5,
bon5,
bor5,
bro5,
lib5,
lob5,
nib5,
nob5,
obi5,
orb5,
rib5,
rob5,
ion3,
lin3,
lor3,
nil3,
nor3,
oil3,
rin3,
2 letter words:
bi4,
bo4,
ob4,
in2,
io2,
li2,
lo2,
no2,
oi2,
on2,
or2,