6 letter words:
turnip8,
5 letter words:
input7,
print7,
prunt7,
purin7,
unrip7,
rutin5,
4 letter words:
pint6,
pirn6,
ptui6,
puir6,
punt6,
puri6,
ript6,
trip6,
ruin4,
runt4,
trin4,
turn4,
unit4,
3 letter words:
nip5,
pin5,
pir5,
pit5,
piu5,
pun5,
pur5,
put5,
rip5,
tip5,
tup5,
urp5,
nit3,
nur3,
nut3,
rin3,
rit3,
run3,
rut3,
tin3,
tui3,
tun3,
uni3,
urn3,
2 letter words:
pi4,
up4,
in2,
it2,
nu2,
ti2,
un2,
ur2,
ut2,
