6 letter words:
petter8,
5 letter words:
peter7,
petre7,
4 letter words:
peer6,
pere6,
pert6,
pree6,
rete4,
teer4,
tete4,
tree4,
tret4,
3 letter words:
pee5,
per5,
pet5,
pre5,
rep5,
ere3,
ree3,
ret3,
tee3,
tet3,
2 letter words:
pe4,
ee2,
er2,
et2,
re2,
te2,