Multiple loops in a single layer

Hello everybody! 

I Know how to loop a number of last keyframes like this:

x = 8 // number of last keyframes

loopOut("cycle",x)

OK. It's for the last keyframes. what if the selected keyframes were in the beginning or in the middle or even randomly between several keyframes. One here an other one there. the other one somewhere else! To be precise, I want to animate a human walks a pass. Then stops. Do something else. Then runs out of composition. Walking and running are looped array of key frames. I'm looking for an expression which loopin the related array of key frames for walking and loopout an other array of key frames for running. So the key frames between those two arrays wont loop.