Guild Wars 2

I’m trying to get the ‘Become the Master’ achievement for World 2, Zone 2 where you have to kill all the assassins. Everything’s going well until i’ve reached the teleport platforms where 2 are located on a platform to the far right however I can’t seem to reach them. I’ve tried every teleporter and i’ve even tried jumping to them to no avail. Does anyone know the right combination of teleporters?

from the starting platform: left – right – right – middle