C13112133313331323321333133313331333133313331323132323132233131231   >>    C1311213331333132332133313331333133313331333132313232313223313123   <<    C13112133313331323321333133313331333133313331323132323132233131233   >>      C13112133313331323321333133313331333133313331323132323132233131232   >>