5 letter words:
askoi9,
ikats9,
iotas5,
ostia5,
stoai5,
4 letter words:
ikat8,
kats8,
kist8,
kits8,
koas8,
kois8,
oaks8,
okas8,
saki8,
sika8,
skat8,
skit8,
soak8,
task8,
aits4,
iota4,
oast4,
oats4,
sati4,
stoa4,
taos4,
3 letter words:
ask7,
kas7,
kat7,
kis7,
kit7,
koa7,
koi7,
kos7,
oak7,
oka7,
ska7,
ski7,
tsk7,
ais3,
ait3,
its3,
oat3,
sat3,
sit3,
sot3,
tao3,
tas3,
tis3,
2 letter words:
ka6,
ki6,
ai2,
as2,
at2,
is2,
it2,
oi2,
os2,
si2,
so2,
ta2,
ti2,
to2,