7 letter words:
oarlock13,
6 letter words:
colour8,
ocular8,
5 letter words:
caulk11,
cloak11,
croak11,
crook11,
karoo9,
carol7,
claro7,
clour7,
color7,
coral7,
4 letter words:
calk10,
cark10,
cook10,
cork10,
lack10,
lock10,
luck10,
rack10,
rock10,
ruck10,
kola8,
kolo8,
kora8,
lark8,
look8,
lurk8,
okra8,
raku8,
rook8,
arco6,
calo6,
carl6,
caul6,
coal6,
cola6,
cool6,
curl6,
loca6,
loco6,
orca6,
lour4,
oral4,
3 letter words:
ark7,
auk7,
koa7,
kor7,
oak7,
oka7,
arc5,
car5,
col5,
coo5,
cor5,
cru5,
cur5,
lac5,
oca5,
orc5,
roc5,
lar3,
loo3,
oar3,
ora3,
our3,
2 letter words:
ka6,
al2,
ar2,
la2,
lo2,
or2,