7 letter words:
lupulin9,
5 letter words:
lupin7,
pulli7,
4 letter words:
pill6,
puli6,
pull6,
pulu6,
lulu4,
nill4,
null4,
3 letter words:
lip5,
nip5,
pin5,
piu5,
plu5,
pul5,
pun5,
ill3,
lin3,
nil3,
ulu3,
uni3,
2 letter words:
pi4,
up4,
in2,
li2,
nu2,
un2,