C111123313121111121111331333133313331333131233133313311232322311   >>    C11112331312111112111133133313331333133313123313331331123232231   <<    C111123313121111121111331333133313331333131233133313311232322313   >>      C111123313121111121111331333133313331333131233133313311232322312   >>