5 letter words:
zocco18,
4 letter words:
zoic15,
cowk13,
wick13,
wock13,
cock12,
cook10,
coco8,
3 letter words:
ziz21,
wiz15,
coz14,
zoo12,
kow10,
wok10,
ick9,
wow9,
cow8,
koi7,
oik7,
woo6,
coo5,
2 letter words:
zo11,
ki6,
ko6,
ow5,
wo5,
io2,
oi2,
oo2,