C1111121111331311211331333133313331333112211231211113313232331121   >>    C111112111133131121133133313331333133311221123121111331323233112   <<    C1111121111331311211331333133313331333112211231211113313232331123   >>      C1111121111331311211331333133313331333112211231211113313232331122   >>