C11111333133313232233133313331333133313231313131211113313231323331123233311   >>    C1111133313331323223313331333133313331323131313121111331323132333112323331   <<    C11111333133313232233133313331333133313231313131211113313231323331123233313   >>      C11111333133313232233133313331333133313231313131211113313231323331123233312   >>