C312312111111331312111133133313331322331333133313331323331323132232311   >>    C31231211111133131211113313331333132233133313331333132333132313223231   <<    C312312111111331312111133133313331322331333133313331323331323132232313   >>      C312312111111331312111133133313331322331333133313331323331323132232312   >>