5 letter words:
yolky15,
rooky12,
brook11,
looby10,
4 letter words:
yolk11,
book10,
bork10,
kobo10,
boyo9,
byrl9,
orby9,
kolo8,
look8,
rook8,
lory7,
bolo6,
boor6,
broo6,
lobo6,
obol6,
3 letter words:
yok10,
kob9,
boy8,
yob8,
kor7,
boo5,
bro5,
lob5,
orb5,
rob5,
loo3,
2 letter words:
by7,
oy5,
yo5,
bo4,
lo2,
or2,