C111123313121111121111331333133313331333132232233132313223113312121   >>    C11112331312111112111133133313331333133313223223313231322311331212   <<    C111123313121111121111331333133313331333132232233132313223113312123   >>      C111123313121111121111331333133313331333132232233132313223113312122   >>