C11111211113313112113313331333133313133313232233133313231333132311212111   >>    C1111121111331311211331333133313331313331323223313331323133313231121211   <<    C11111211113313112113313331333133313133313232233133313231333132311212113   >>      C11111211113313112113313331333133313133313232233133313231333132311212112   >>