The four strongest of these Clans returned to the Inner Sphere as would - be conquerors in 3049 , were reinforced by three more Clans a year later .
The four strongest of these Clans were joined in the late 3060s by another two .
The four strongest of these Clans returned to the Inner Sphere as would - be conquerors in 3049 , were reinforced by three more Clans a year later , and were joined in the late 3060s by another two .