Here's where you SELECT the PATTERN LENGTH.

 >>> Please be sure you've:

 OPENED FILES, COUNTED PAGES & FOUND PAGE LENGTHS.  

 

 

 aoto50-24-sqr.jpg    x60-23-sqr.png   x72-23-sqr.png  

 

 x96-23-sqr.png   x120-23-sqr.png   x144-23-sqr.png