5 letter words:
cobza18,
jocko18,
kazoo18,
azoic16,
bazoo16,
cobia9,
4 letter words:
zack19,
jack17,
jock17,
kazi17,
bozo15,
jook15,
koji15,
zobo15,
zoic15,
joco13,
back12,
bock12,
jiao11,
boak10,
boko10,
book10,
cook10,
kobo10,
ciao6,
obia6,
3 letter words:
jiz19,
biz14,
caz14,
coz14,
jak14,
azo12,
jab12,
jib12,
job12,
zoa12,
zoo12,
jai10,
bok9,
ick9,
kab9,
kob9,
bac7,
cab7,
cob7,
kai7,
koa7,
koi7,
oak7,
oik7,
oka7,
abo5,
bio5,
boa5,
boi5,
boo5,
coo5,
oba5,
obi5,
obo5,
oca5,
2 letter words:
za11,
zo11,
ja9,
jo9,
ka6,
ki6,
ko6,
ab4,
ba4,
bi4,
bo4,
ob4,
ai2,
io2,
oi2,
oo2,