9 letter words:
corkborer17,
7 letter words:
crooker13,
6 letter words:
booker12,
broker12,
cooker12,
corker12,
rebook12,
recook12,
recork12,
rocker12,
korero10,
5 letter words:
brock13,
berko11,
broke11,
brook11,
crook11,
ebook11,
ocker11,
corbe9,
roker9,
borer7,
cooer7,
corer7,
crore7,
error5,
4 letter words:
beck12,
bock12,
berk10,
boke10,
boko10,
book10,
bork10,
coke10,
cook10,
cork10,
kerb10,
kobo10,
reck10,
rock10,
kero8,
kore8,
koro8,
roke8,
rook8,
boor6,
bore6,
brer6,
broo6,
brrr6,
cero6,
core6,
oboe6,
robe6,
rore4,
3 letter words:
bok9,
keb9,
kob9,
cob7,
erk7,
kor7,
oke7,
rok7,
boo5,
bor5,
bro5,
brr5,
coo5,
cor5,
eco5,
obe5,
obo5,
orb5,
orc5,
reb5,
rec5,
rob5,
roc5,
err3,
oor3,
ore3,
reo3,
roe3,
roo3,
2 letter words:
ko6,
be4,
bo4,
ob4,
er2,
oe2,
oo2,
or2,
re2,