C1111233131211111211113313331333133313232313331333133311213111211   >>    C111123313121111121111331333133313331323231333133313331121311121   <<    C1111233131211111211113313331333133313232313331333133311213111213   >>      C1111233131211111211113313331333133313232313331333133311213111212   >>