4 letter words:
cowk13,
wick13,
wock13,
pick12,
pock12,
cowp11,
kiwi11,
cook10,
piki10,
pook10,
coop8,
poco8,
3 letter words:
kow10,
wok10,
ick9,
kip9,
kop9,
cow8,
pow8,
wop8,
cop7,
koi7,
oik7,
pic7,
iwi6,
woo6,
coo5,
oop5,
poi5,
poo5,
2 letter words:
ki6,
ko6,
ow5,
wo5,
op4,
pi4,
po4,
io2,
oi2,
oo2,