C22212323232133313113313331333133313231323133313331121231221312113321223121   >>    C2221232323213331311331333133313331323132313331333112123122131211332122312   <<    C22212323232133313113313331333133313231323133313331121231221312113321223123   >>      C22212323232133313113313331333133313231323133313331121231221312113321223122   >>