4 letter words:
jook15,
jouk15,
koji15,
pook10,
pouk10,
3 letter words:
jow13,
kow10,
wok10,
kip9,
kop9,
wow9,
pow8,
wop8,
koi7,
oik7,
ouk7,
woo6,
oop5,
oup5,
piu5,
poi5,
poo5,
upo5,
2 letter words:
jo9,
ki6,
ko6,
ow5,
wo5,
op4,
pi4,
po4,
up4,
io2,
oi2,
oo2,
ou2,