How to merge Patches in blockMesh
 

Hi all,

I am trying to make a cylinder in blockMeshDict. I have already merged interface1 to interface2 and interface3 to interface4 but the problem is that I cannot merge interface5 to interface6 while I used exactly the same procedure. Can someone help me how to fix this? I tried to use two different methods but both had the same problem. I attached both blockMeshes.

Best regards
Masih Mojarrad