C111123313121111121111331323133313331333132333133313121111331333133313132213111   >>    C11112331312111112111133132313331333133313233313331312111133133313331313221311   <<    C111123313121111121111331323133313331333132333133313121111331333133313132213113   >>      C111123313121111121111331323133313331333132333133313121111331333133313132213112   >>