C11111211113313112113313331333133313133313232233133313113313331311331313312111   >>    C1111121111331311211331333133313331313331323223313331311331333131133131331211   <<    C11111211113313112113313331333133313133313232233133313113313331311331313312113   >>      C11111211113313112113313331333133313133313232233133313113313331311331313312112   >>