C1111233131211111211113313331333133313331333133313331333133313113311112111   >>    C111123313121111121111331333133313331333133313331333133313331311331111211   <<    C1111233131211111211113313331333133313331333133313331333133313113311112113   >>      C1111233131211111211113313331333133313331333133313331333133313113311112112   >>