Consider the network below where the numbers represent the IGP weights of each link (1 if there is no number next to a link)
![https://inginious.info.ucl.ac.be/course/lingi2142-QCM/mpls-lsp-r4/network.png](https://inginious.info.ucl.ac.be/course/lingi2142-QCM/mpls-lsp-r4/network.png)
What are the LSPs towards router R4
In your answer, return the path as RX-RY-RZ. If there are several equal cost paths, separate them with a comma (,). For example RX-RY-RZ,RX-RA-RB-RZ