C11111333133313232233133313331333133313231322321133131133131133132311211   >>    C1111133313331323223313331333133313331323132232113313113313113313231121   <<    C11111333133313232233133313331333133313231322321133131133131133132311213   >>      C11111333133313232233133313331333133313231322321133131133131133132311212   >>