emacs - move buffer to next subtree in org-mode when narrowed - C-x n s -

Is there a way to go to the next / previous title, at the same level when (CC CF / B) when the buffer is compressed Is done subtitle (cx ns)?

Say I have the following framework

  * first ** item a ** item b * second ** item a2 ** item b2  

and got me the * first and narrowed with Cx ns , now I only see:

  * First ** Item A ** Item B  

If I try CC CF / B with next / previous title Am i can't I would like to be able to move forward between sub-clauses in one joint (compressed) three. How can I do this?