C1111233131211111211113313331333133313232321331121111113313232211111211   >>    C111123313121111121111331333133313331323232133112111111331323221111121   <<    C1111233131211111211113313331333133313232321331121111113313232211111213   >>      C1111233131211111211113313331333133313232321331121111113313232211111212   >>