5 letter words:
wacko14,
4 letter words:
cawk13,
cowk13,
wack13,
wock13,
back12,
bock12,
boak10,
boko10,
book10,
cook10,
kobo10,
3 letter words:
kaw10,
kow10,
wok10,
bok9,
kab9,
kob9,
bow8,
caw8,
cow8,
wab8,
bac7,
cab7,
cob7,
koa7,
oak7,
oka7,
woo6,
abo5,
boa5,
boo5,
coo5,
oba5,
obo5,
oca5,
2 letter words:
ka6,
ko6,
aw5,
ow5,
wo5,
ab4,
ba4,
bo4,
ob4,
oo2,