6 letter words:
spetch13,
5 letter words:
pechs12,
chest10,
techs10,
thesp10,
4 letter words:
pech11,
echt9,
etch9,
heps9,
hept9,
hesp9,
pehs9,
sech9,
tech9,
ceps8,
pecs8,
spec8,
eths7,
hest7,
hets7,
shet7,
pest6,
pets6,
sect6,
sept6,
spet6,
step6,
tecs6,
3 letter words:
che8,
ech8,
hep8,
peh8,
pht8,
cep7,
pec7,
ehs6,
eth6,
hes6,
het6,
she6,
the6,
pes5,
pet5,
pst5,
sec5,
tec5,
est3,
set3,
tes3,
2 letter words:
ch7,
eh5,
he5,
sh5,
pe4,
es2,
et2,
st2,
te2,
