View only a section of timeline in a loop.

I'm currently trying to do some pixel art animations and I have a walking cycle in each direction. It's good to have them all in same timeline to make sure they fit well together. Now to my question. If i want to focus on one direction. is there a way to have the timeline loop only one section?  So if I have 32 frame on the timeline and my left directional frame are 9-12, can I just select those frame to loop without changing the rest of the timeline?