C11111333133313232233133313331333132313331323321313331333121111331333133311211   >>    C1111133313331323223313331333133313231333132332131333133312111133133313331121   <<    C11111333133313232233133313331333132313331323321313331333121111331333133311213   >>      C11111333133313232233133313331333132313331323321313331333121111331333133311212   >>