5 letter words:
apoop9,
4 letter words:
capa8,
capo8,
coop8,
oppo8,
paca8,
paco8,
papa8,
poco8,
poop8,
apod7,
coda7,
doco7,
dopa7,
pood7,
3 letter words:
app7,
cap7,
cop7,
pac7,
pap7,
pop7,
cad6,
cod6,
dap6,
doc6,
dop6,
pad6,
pod6,
apo5,
caa5,
coo5,
oca5,
oop5,
poa5,
poo5,
ado4,
doo4,
oda4,
2 letter words:
op4,
pa4,
po4,
ad3,
da3,
do3,
od3,
aa2,
oo2,