C31232233133313221211113313331333133313113311331333133312113312121   >>    C3123223313331322121111331333133313331311331133133313331211331212   <<    C31232233133313221211113313331333133313113311331333133312113312123   >>      C31232233133313221211113313331333133313113311331333133312113312122   >>