C13112133313331323321333133313331333133313331313331333132312312311   >>    C1311213331333132332133313331333133313331333131333133313231231231   <<    C13112133313331323321333133313331333133313331313331333132312312313   >>      C13112133313331323321333133313331333133313331313331333132312312312   >>