5 letter words:
perks11,
treks9,
prest7,
strep7,
4 letter words:
keps10,
kept10,
perk10,
skep10,
trek8,
pert6,
pest6,
pets6,
reps6,
sept6,
step6,
erst4,
rest4,
rets4,
tres4,
3 letter words:
kep9,
tsk7,
per5,
pes5,
pet5,
pst5,
rep5,
ers3,
res3,
ret3,
ser3,
set3,
2 letter words:
pe4,
er2,
es2,
et2,
re2,