C111123313121111121111331333133313331333131233133313311223323132311   >>    C11112331312111112111133133313331333133313123313331331122332313231   <<    C111123313121111121111331333133313331333131233133313311223323132313   >>      C111123313121111121111331333133313331333131233133313311223323132312   >>