6 letter words:
unborn8,
5 letter words:
bourn7,
4 letter words:
born6,
boun6,
bunn6,
burn6,
noun4,
ourn4,
3 letter words:
bon5,
bor5,
bro5,
bru5,
bun5,
bur5,
nob5,
nub5,
orb5,
rob5,
rub5,
urb5,
non3,
nor3,
nun3,
nur3,
our3,
run3,
urn3,
2 letter words:
bo4,
ob4,
no2,
nu2,
on2,
or2,
ou2,
un2,
ur2,
