While we were sorting some papers we found $3$ strange sheets which seemed to come from small books. They had once been used for wrapping and one side was very faded. The other side was in a language we did not know, but there were page numbers at the foot of each page.
I decided to make a little book to see how the numbers worked. It had $4$ sheets which I folded to make $16$ pages. There was no need to staple it.