C22212323232133313113313331333133313231323133313331121231221321131211233121   >>    C2221232323213331311331333133313331323132313331333112123122132113121123312   <<    C22212323232133313113313331333133313231323133313331121231221321131211233123   >>      C22212323232133313113313331333133313231323133313331121231221321131211233122   >>