C13112133313331323321333133313331333133313331323133313112223111   >>    C1311213331333132332133313331333133313331333132313331311222311   <<    C13112133313331323321333133313331333133313331323133313112223113   >>      C13112133313331323321333133313331333133313331323133313112223112   >>