5 letter words:
block13,
bucko13,
bucku13,
4 letter words:
cowk13,
wock13,
bock12,
buck12,
bouk10,
bulk10,
lock10,
luck10,
blow9,
bowl9,
clow9,
cowl9,
bloc8,
club8,
oulk8,
clou6,
3 letter words:
kow10,
wok10,
bok9,
kob9,
bow8,
cow8,
cob7,
cub7,
ouk7,
low6,
owl6,
col5,
lob5,
lou3,
ulu3,
2 letter words:
ko6,
ow5,
wo5,
bo4,
ob4,
lo2,
ou2,