6 letter words:
cactus10,
5 letter words:
cacas9,
scuta7,
4 letter words:
caca8,
acta6,
acts6,
casa6,
cast6,
cats6,
cuts6,
scat6,
scut6,
taus4,
utas4,
3 letter words:
act5,
cat5,
cut5,
sac5,
aas3,
sat3,
sau3,
tas3,
tau3,
uta3,
uts3,
2 letter words:
aa2,
as2,
at2,
ta2,
us2,
ut2,