C1111233131211111211113313331333133313331333133313331333133313232223213311   >>    C111123313121111121111331333133313331333133313331333133313331323222321331   <<    C1111233131211111211113313331333133313331333133313331333133313232223213313   >>      C1111233131211111211113313331333133313331333133313331333133313232223213312   >>