5 letter words:
abrin7,
bairn7,
baron7,
borna7,
brain7,
inorb7,
robin7,
noria5,
4 letter words:
abri6,
bani6,
barn6,
biro6,
boar6,
bona6,
bora6,
born6,
bran6,
brin6,
brio6,
obia6,
rabi6,
riba6,
airn4,
inro4,
iron4,
naoi4,
noir4,
nori4,
rain4,
rani4,
roan4,
roin4,
3 letter words:
abo5,
arb5,
ban5,
bar5,
bin5,
bio5,
boa5,
boi5,
bon5,
bor5,
bra5,
bro5,
nab5,
nib5,
nob5,
oba5,
obi5,
orb5,
rib5,
rob5,
ain3,
air3,
ani3,
ion3,
nor3,
oar3,
ora3,
rai3,
ran3,
ria3,
rin3,
2 letter words:
ab4,
ba4,
bi4,
bo4,
ob4,
ai2,
an2,
ar2,
in2,
io2,
na2,
no2,
oi2,
on2,
or2,