C22212323232133313113313331333132313331323331123231323323232211323211   >>    C2221232323213331311331333133313231333132333112323132332323221132321   <<    C22212323232133313113313331333132313331323331123231323323232211323213   >>      C22212323232133313113313331333132313331323331123231323323232211323212   >>