C111123313121111121111331333133313331333131233133313113313233311212111   >>    C11112331312111112111133133313331333133313123313331311331323331121211   <<    C111123313121111121111331333133313331333131233133313113313233311212113   >>      C111123313121111121111331333133313331333131233133313113313233311212112   >>