5 letter words:
softy11,
tikis9,
foist8,
4 letter words:
kifs11,
yoks11,
foys10,
kist8,
kits8,
kois8,
skit8,
tiki8,
fist7,
fits7,
sift7,
soft7,
toys7,
3 letter words:
kif10,
sky10,
yok10,
foy9,
kis7,
kit7,
koi7,
kos7,
ski7,
tsk7,
fit6,
ifs6,
oft6,
soy6,
sty6,
toy6,
its3,
sit3,
sot3,
tis3,
2 letter words:
ki6,
if5,
of5,
oy5,
yo5,
is2,
it2,
oi2,
os2,
si2,
so2,
ti2,
to2,