C1111233131211111211113313331333133313232321333133313331333131211213311   >>    C111123313121111121111331333133313331323232133313331333133313121121331   <<    C1111233131211111211113313331333133313232321333133313331333131211213313   >>      C1111233131211111211113313331333133313232321333133313331333131211213312   >>