6 letter words:
unzips17,
5 letter words:
unzip16,
sunup7,
4 letter words:
zips15,
zins13,
nips6,
pins6,
puns6,
snip6,
spin6,
spun6,
3 letter words:
zip14,
zin12,
nip5,
pin5,
pis5,
piu5,
psi5,
pun5,
pus5,
sip5,
sup5,
ups5,
ins3,
nus3,
sin3,
sun3,
uns3,
2 letter words:
pi4,
up4,
in2,
is2,
nu2,
si2,
un2,
us2,