4 letter words:
kuzu17,
zouk17,
bozo15,
zobo15,
zobu15,
ouzo13,
zoot13,
boko10,
book10,
bouk10,
kobo10,
koto8,
kutu8,
toko8,
took8,
touk8,
boot6,
bout6,
3 letter words:
zoo12,
bok9,
kob9,
ouk7,
boo5,
bot5,
but5,
obo5,
tub5,
oot3,
out3,
too3,
utu3,
2 letter words:
zo11,
ko6,
bo4,
ob4,
oo2,
ou2,
to2,
ut2,