6 letter words:
accrue10,
5 letter words:
occur9,
ocrea7,
4 letter words:
ceca8,
coca8,
croc8,
acre6,
arco6,
care6,
cero6,
core6,
cure6,
ecru6,
orca6,
race6,
aero4,
euro4,
roue4,
urea4,
3 letter words:
ace5,
arc5,
car5,
cor5,
cru5,
cue5,
cur5,
ecu5,
oca5,
orc5,
rec5,
roc5,
are3,
ear3,
eau3,
era3,
oar3,
ora3,
ore3,
our3,
roe3,
rue3,
2 letter words:
ae2,
ar2,
er2,
oe2,
or2,
re2,