C13112133313331323321333133313331323133313331333133313113313232223111   >>    C1311213331333132332133313331333132313331333133313331311331323222311   <<    C13112133313331323321333133313331323133313331333133313113313232223113   >>      C13112133313331323321333133313331323133313331333133313113313232223112   >>