5 letter words:
bucko13,
4 letter words:
beck12,
bock12,
buck12,
boke10,
bouk10,
buke10,
coke10,
cuke10,
cube8,
3 letter words:
bok9,
keb9,
kob9,
cob7,
cub7,
euk7,
kue7,
oke7,
ouk7,
uke7,
cue5,
eco5,
ecu5,
obe5,
2 letter words:
ko6,
be4,
bo4,
ob4,
oe2,
ou2,