5 letter words:
kokum15,
crook11,
mucor9,
mucro9,
4 letter words:
kook12,
mock12,
muck12,
cook10,
cork10,
moko10,
mook10,
murk10,
rock10,
ruck10,
coom8,
corm8,
koro8,
koru8,
rook8,
cour6,
moor6,
room6,
roum6,
3 letter words:
cum7,
kor7,
moc7,
ouk7,
rok7,
coo5,
cor5,
cru5,
cur5,
moo5,
mor5,
mou5,
oom5,
orc5,
roc5,
rom5,
ruc5,
rum5,
oor3,
our3,
roo3,
2 letter words:
ko6,
mo4,
mu4,
om4,
um4,
oo2,
or2,
ou2,
ur2,