C13112133313331323321333133313331333133313331333133313331312111133112132333131   >>    C1311213331333132332133313331333133313331333133313331333131211113311213233313   <<    C13112133313331323321333133313331333133313331333133313331312111133112132333133   >>      C13112133313331323321333133313331333133313331333133313331312111133112132333132   >>