C22212323232133313113313331333133313231333112123221322211331312321   >>    C2221232323213331311331333133313331323133311212322132221133131232   <<    C22212323232133313113313331333133313231333112123221322211331312323   >>      C22212323232133313113313331333133313231333112123221322211331312322   >>