5 letter words:
kazoo18,
matzo16,
4 letter words:
mozo15,
zoom15,
amok10,
mako10,
koto8,
took8,
atom6,
moat6,
moot6,
toom6,
3 letter words:
azo12,
zoa12,
zoo12,
kat7,
koa7,
oak7,
oka7,
mat5,
moa5,
moo5,
mot5,
tam5,
tom5,
oat3,
oot3,
tao3,
too3,
2 letter words:
za11,
ka6,
am4,
ma4,
mo4,
om4,
at2,
ta2,
to2,