C22212323232133313113313331333132313331323331123231323323211221311323211   >>    C2221232323213331311331333133313231333132333112323132332321122131132321   <<    C22212323232133313113313331333132313331323331123231323323211221311323213   >>      C22212323232133313113313331333132313331323331123231323323211221311323212   >>