C11111333133313232233133313331333133313231312111133131133132233132311212111   >>    C1111133313331323223313331333133313331323131211113313113313223313231121211   <<    C11111333133313232233133313331333133313231312111133131133132233132311212113   >>      C11111333133313232233133313331333133313231312111133131133132233132311212112   >>