C22212323232133313113313331333132313331323331123231323323232211312121   >>    C2221232323213331311331333133313231333132333112323132332323221131212   <<    C22212323232133313113313331333132313331323331123231323323232211312123   >>      C22212323232133313113313331333132313331323331123231323323232211312122   >>