9 letter words:
principia15,
8 letter words:
principi14,
7 letter words:
priapic13,
rappini11,
6 letter words:
pianic10,
priapi10,
rapini8,
5 letter words:
cippi11,
carpi9,
panic9,
picra9,
acini7,
cairn7,
naric7,
pirai7,
ricin7,
4 letter words:
capi8,
carp8,
crap8,
parp8,
pica8,
pipa8,
pipi8,
ripp8,
cain6,
carn6,
cran6,
narc6,
nipa6,
pain6,
pair6,
pian6,
pina6,
pirn6,
airn4,
inia4,
rain4,
rani4,
3 letter words:
app7,
cap7,
pac7,
pap7,
pic7,
pip7,
arc5,
can5,
car5,
nap5,
nip5,
pan5,
par5,
pia5,
pin5,
pir5,
rap5,
rip5,
ain3,
air3,
ani3,
rai3,
ran3,
ria3,
rin3,
2 letter words:
pa4,
pi4,
ai2,
an2,
ar2,
in2,
na2,