C111123313121111121111331333133313331333132232233132313231333132313333212121   >>    C11112331312111112111133133313331333133313223223313231323133313231333321212   <<    C111123313121111121111331333133313331333132232233132313231333132313333212123   >>      C111123313121111121111331333133313331333132232233132313231333132313333212122   >>