4 letter words:
kows11,
woks11,
kips10,
kops10,
skip10,
spik10,
pows9,
sowp9,
swop9,
wisp9,
wops9,
kois8,
oiks8,
skio8,
piso6,
pois6,
3 letter words:
kow10,
wok10,
kip9,
kop9,
pow8,
wop8,
kis7,
koi7,
kos7,
oik7,
sik7,
ski7,
sow6,
wis6,
wos6,
ops5,
pis5,
poi5,
pos5,
psi5,
sip5,
sop5,
ios3,
iso3,
2 letter words:
ki6,
ko6,
ow5,
wo5,
op4,
pi4,
po4,
io2,
is2,
oi2,
os2,
si2,
so2,