5 letter words:
boron7,
4 letter words:
bozo15,
zobo15,
orzo13,
zoon13,
boon6,
boor6,
born6,
broo6,
roon4,
3 letter words:
zoo12,
bon5,
boo5,
bor5,
bro5,
nob5,
obo5,
orb5,
rob5,
noo3,
nor3,
ono3,
oon3,
oor3,
roo3,
2 letter words:
zo11,
bo4,
ob4,
no2,
on2,
oo2,
or2,