C1111121111331311211331333133313331333133313221211113313331333112211232323131   >>    C111112111133131121133133313331333133313331322121111331333133311221123232313   <<    C1111121111331311211331333133313331333133313221211113313331333112211232323133   >>      C1111121111331311211331333133313331333133313221211113313331333112211232323132   >>