C1111233131211111211113313331333133313331333133313331333133313113313232331211   >>    C111123313121111121111331333133313331333133313331333133313331311331323233121   <<    C1111233131211111211113313331333133313331333133313331333133313113313232331213   >>      C1111233131211111211113313331333133313331333133313331333133313113313232331212   >>