C111123313121111121111331333133313331333131333133313331322133311212311   >>    C11112331312111112111133133313331333133313133313331333132213331121231   <<    C111123313121111121111331333133313331333131333133313331322133311212313   >>      C111123313121111121111331333133313331333131333133313331322133311212312   >>