C1111233131211111211113313331333133313232313331333131221133132212311   >>    C111123313121111121111331333133313331323231333133313122113313221231   <<    C1111233131211111211113313331333133313232313331333131221133132212313   >>      C1111233131211111211113313331333133313232313331333131221133132212312   >>