C111123313121111121111331333133313331333132232233131211113313113121223121   >>    C11112331312111112111133133313331333133313223223313121111331311312122312   <<    C111123313121111121111331333133313331333132232233131211113313113121223123   >>      C111123313121111121111331333133313331333132232233131211113313113121223122   >>