I sought the assistance of sh404SEF forums:
anything-digital.com/forum/extension/sh404sef/2661-problem-with-k2-and-the-title-of-the-multi-category.html?p=1#p16450
and they told me to ask the forum for k2, can anyone help me solve my problem:
categories that have multiple pages in the title remains the same and I would like to come out ... page 1 page 2 etc.
Thanks a lot

stefano