C22212323232133313113313331333133313231333112123221322331121221   >>    C2221232323213331311331333133313331323133311212322132233112122   <<    C22212323232133313113313331333133313231333112123221322331121223   >>      C22212323232133313113313331333133313231333112123221322331121222   >>