5 letter words:
kotos9,
stook9,
tokos9,
ottos5,
stoit5,
toits5,
toots5,
4 letter words:
kist8,
kits8,
kois8,
koto8,
oiks8,
skio8,
skit8,
sook8,
toko8,
took8,
oots4,
otto4,
soot4,
stot4,
tits4,
toit4,
toot4,
tost4,
tots4,
3 letter words:
kis7,
kit7,
koi7,
kos7,
oik7,
sik7,
ski7,
tsk7,
ios3,
iso3,
its3,
oos3,
oot3,
sit3,
sot3,
tis3,
tit3,
too3,
tot3,
2 letter words:
ki6,
ko6,
io2,
is2,
it2,
oi2,
oo2,
os2,
si2,
so2,
st2,
ti2,
to2,