I deleted Version 15. Actually, it’s not a problem to only convert the first 2 pages to PDF, or to only print the first 2 pages.
It seems that Versions 11, 12, 13 and 16 are all the same. I checked using the Compare Document feature in OpenOffice. If so, we should delete 11, 12, 13.
By the way, I still think it’s better to replace the example in each sheet with extra writing space (extend the table) and an example sheet glued on the front cover of the binder. It’s not necessary to have the example on every sheet.