5 letter words:
yolky15,
bulky14,
yokul12,
4 letter words:
yuky14,
kybo13,
yolk11,
youk11,
yuko11,
bouk10,
bulk10,
buoy9,
oulk8,
3 letter words:
kyu10,
yok10,
yuk10,
bok9,
kob9,
boy8,
buy8,
yob8,
ouk7,
loy6,
you6,
lob5,
lou3,
2 letter words:
ky9,
by7,
ko6,
oy5,
yo5,
yu5,
bo4,
ob4,
lo2,
ou2,