C1111233131211111211113313331333133313232321333133313331333131211211312311   >>    C111123313121111121111331333133313331323232133313331333133313121121131231   <<    C1111233131211111211113313331333133313232321333133313331333131211211312313   >>      C1111233131211111211113313331333133313232321333133313331333131211211312312   >>