C1111233131211111211113313331333133313232313331333133313332313331323132232311   >>    C111123313121111121111331333133313331323231333133313331333231333132313223231   <<    C1111233131211111211113313331333133313232313331333133313332313331323132232313   >>      C1111233131211111211113313331333133313232313331333133313332313331323132232312   >>