7 letter words:
crooker13,
6 letter words:
cooker12,
corker12,
recook12,
recork12,
rocker12,
korero10,
5 letter words:
koker13,
crook11,
ocker11,
roker9,
cooer7,
corer7,
crore7,
4 letter words:
keck14,
kook12,
coke10,
cook10,
cork10,
reck10,
rock10,
kero8,
kore8,
koro8,
roke8,
rook8,
cero6,
core6,
rore4,
3 letter words:
erk7,
kor7,
oke7,
rok7,
coo5,
cor5,
eco5,
orc5,
rec5,
roc5,
err3,
oor3,
ore3,
reo3,
roe3,
roo3,
2 letter words:
ko6,
er2,
oe2,
oo2,
or2,
re2,