C111123313121111121111331333133313331333131233133313311213223311   >>    C11112331312111112111133133313331333133313123313331331121322331   <<    C111123313121111121111331333133313331333131233133313311213223313   >>      C111123313121111121111331333133313331333131233133313311213223312   >>