5 letter words:
pipis9,
ripps9,
pilis7,
pirls7,
4 letter words:
pipi8,
pips8,
ripp8,
lips6,
lisp6,
pili6,
pirl6,
pirs6,
rips6,
risp6,
slip6,
iris4,
liri4,
siri4,
3 letter words:
pip7,
lip5,
pir5,
pis5,
psi5,
rip5,
sip5,
lis3,
sir3,
sri3,
2 letter words:
pi4,
is2,
li2,
si2,