Translate the following English sentence to French:
"One of them is simply the statutory pay-as-you-go system and the other is the system of capital cover which is an extension of the former, it is just that the only problem we are facing is that all countries have very different starting positions."
L' une est constituée du système légal du pay as you go, l' autre consiste en la nécessaire couverture du capital. Le problème est que les pays connaissent des situations de départ très différentes.