4 letter words:
bozo15,
zobo15,
zoon13,
down8,
wood8,
bond7,
doob7,
woon7,
boon6,
doon5,
3 letter words:
dzo13,
zoo12,
bow8,
dow7,
bod6,
dob6,
now6,
own6,
won6,
woo6,
bon5,
boo5,
nob5,
obo5,
don4,
doo4,
nod4,
noo3,
ono3,
oon3,
2 letter words:
zo11,
ow5,
wo5,
bo4,
ob4,
do3,
od3,
no2,
on2,
oo2,