7 letter words:
pithier12,
6 letter words:
periti8,
pitier8,
5 letter words:
thrip10,
ither8,
their8,
tripe7,
4 letter words:
pith9,
heir7,
hire7,
thir7,
peri6,
pert6,
pier6,
ripe6,
tipi6,
trip6,
rite4,
tier4,
tire4,
3 letter words:
hep8,
hip8,
peh8,
phi8,
pht8,
eth6,
her6,
het6,
hie6,
hit6,
the6,
per5,
pet5,
pie5,
pit5,
rep5,
rip5,
tip5,
ire3,
rei3,
ret3,
tie3,
2 letter words:
eh5,
he5,
hi5,
pe4,
pi4,
er2,
et2,
it2,
re2,
ti2,