5 letter words:
pipis9,
ripps9,
pirns7,
4 letter words:
zips15,
zins13,
pipi8,
pips8,
ripp8,
nips6,
pins6,
pirn6,
pirs6,
rips6,
risp6,
snip6,
spin6,
iris4,
nisi4,
rins4,
siri4,
3 letter words:
zip14,
riz12,
zin12,
pip7,
nip5,
pin5,
pir5,
pis5,
psi5,
rip5,
sip5,
ins3,
nis3,
rin3,
sin3,
sir3,
sri3,
2 letter words:
pi4,
in2,
is2,
si2,