C1111233131211111211113313331333133313331333133313331333133313223132333231   >>    C111123313121111121111331333133313331333133313331333133313331322313233323   <<    C1111233131211111211113313331333133313331333133313331333133313223132333233   >>      C1111233131211111211113313331333133313331333133313331333133313223132333232   >>