C111123313121111121111331333133313331333132232233133313311231212131   >>    C11112331312111112111133133313331333133313223223313331331123121213   <<    C111123313121111121111331333133313331333132232233133313311231212133   >>      C111123313121111121111331333133313331333132232233133313311231212132   >>