C1111233131211111211113313331333133313331333133313331333132332133112311   >>    C111123313121111121111331333133313331333133313331333133313233213311231   <<    C1111233131211111211113313331333133313331333133313331333132332133112313   >>      C1111233131211111211113313331333133313331333133313331333132332133112312   >>