5 letter words:
spook11,
pious7,
4 letter words:
kips10,
kops10,
skip10,
spik10,
kois8,
sook8,
souk8,
oops6,
opus6,
piso6,
pois6,
poos6,
soup6,
3 letter words:
kip9,
kop9,
kis7,
koi7,
kos7,
ski7,
suk7,
ops5,
pis5,
piu5,
poi5,
poo5,
psi5,
pus5,
sip5,
sop5,
sup5,
upo5,
ups5,
sou3,
2 letter words:
ki6,
op4,
pi4,
up4,
is2,
oi2,
os2,
si2,
so2,
us2,