C1111233131211111211113313331333133313232321333133313331333211132132311   >>    C111123313121111121111331333133313331323232133313331333133321113213231   <<    C1111233131211111211113313331333133313232321333133313331333211132132313   >>      C1111233131211111211113313331333133313232321333133313331333211132132312   >>