5 letter words:
croup9,
duroc8,
proud8,
4 letter words:
coup8,
crop8,
cord7,
crud7,
curd7,
dorp7,
drop7,
prod7,
updo7,
pour6,
roup6,
dour5,
duro5,
3 letter words:
cop7,
cup7,
cod6,
cud6,
doc6,
dup6,
pod6,
pud6,
cor5,
cru5,
cur5,
orc5,
pro5,
pur5,
roc5,
upo5,
urp5,
dor4,
duo4,
oud4,
rod4,
udo4,
urd4,
our3,
2 letter words:
op4,
up4,
do3,
od3,
or2,