C111123313121111121111331333133313331322121111331333133313331333121111132333111   >>    C11112331312111112111133133313331333132212111133133313331333133312111113233311   <<    C111123313121111121111331333133313331322121111331333133313331333121111132333113   >>      C111123313121111121111331333133313331322121111331333133313331333121111132333112   >>