C1111233131211111211113313331333133313232321331121111131121133131   >>    C111123313121111121111331333133313331323232133112111113112113313   <<    C1111233131211111211113313331333133313232321331121111131121133133   >>      C1111233131211111211113313331333133313232321331121111131121133132   >>