C1111233131211111211113313331333133313331333133313331333133313113311331211   >>    C111123313121111121111331333133313331333133313331333133313331311331133121   <<    C1111233131211111211113313331333133313331333133313331333133313113311331213   >>      C1111233131211111211113313331333133313331333133313331333133313113311331212   >>