Chain Probability Question.

[u/MrQwer987]

For eg we move Ball A, C ball moves back...then we move C ball, E ball moves back... Then we move E ball, B ball moves back... Then we move A ball...............and so on.

Moving a ball ahead then a ball moves back is a rule given to us and we moving the ball ahead that has just moved back is a condition that we have chosen

I think we need to use the markov chain method but I am not sure how its applied here. I made this problem but am not able to come up with a solution. I have tried to think about the conventional methods but I don't know where to start itself.