4 letter words:
kybo13,
moby11,
roky11,
yolk11,
york11,
bork10,
byrl9,
moly9,
moyl9,
orby9,
borm8,
lory7,
3 letter words:
yok10,
bok9,
kob9,
boy8,
lym8,
moy8,
yob8,
yom8,
kor7,
mob7,
rok7,
loy6,
bor5,
bro5,
lob5,
mol5,
mor5,
olm5,
orb5,
rob5,
rom5,
lor3,
2 letter words:
ky9,
by7,
my7,
ko6,
oy5,
yo5,
bo4,
mo4,
ob4,
om4,
lo2,
or2,