C1111121111331311211331333133313331333112211231211113313232323132322311   >>    C111112111133131121133133313331333133311221123121111331323232313232231   <<    C1111121111331311211331333133313331333112211231211113313232323132322313   >>      C1111121111331311211331333133313331333112211231211113313232323132322312   >>