C1111233131211111211113313331333133313331312331333132323231333232311   >>    C111123313121111121111331333133313331333131233133313232323133323231   <<    C1111233131211111211113313331333133313331312331333132323231333232313   >>      C1111233131211111211113313331333133313331312331333132323231333232312   >>