4 letter words:
chou9,
coho9,
ouch9,
hood8,
doco7,
douc7,
dodo6,
3 letter words:
hoc8,
och8,
doh7,
duh7,
hod7,
cod6,
cud6,
doc6,
hoo6,
oho6,
ooh6,
coo5,
dod5,
dud5,
odd5,
doo4,
duo4,
oud4,
udo4,
2 letter words:
ch7,
ho5,
oh5,
uh5,
do3,
od3,
oo2,
ou2,