5 letter words:
input7,
unpin7,
4 letter words:
pint6,
ptui6,
punt6,
tipi6,
inti4,
unit4,
3 letter words:
nip5,
pin5,
pit5,
piu5,
pun5,
put5,
tip5,
tup5,
inn3,
nit3,
nun3,
nut3,
tin3,
tui3,
tun3,
2 letter words:
pi4,
up4,
in2,
it2,
nu2,
ti2,
un2,
ut2,