6 letter words:
stooks10,
5 letter words:
zooks18,
kotos9,
sooks9,
stook9,
tokos9,
soots5,
4 letter words:
zoos13,
zoot13,
koss8,
koto8,
sook8,
toko8,
took8,
tsks8,
oots4,
soot4,
sots4,
toss4,
3 letter words:
zoo12,
zos12,
kos7,
tsk7,
oos3,
oot3,
sos3,
sot3,
too3,
2 letter words:
zo11,
ko6,
oo2,
os2,
so2,
st2,
to2,