C22212323232133313113313331333132313331323231323323233313111211   >>    C2221232323213331311331333133313231333132323132332323331311121   <<    C22212323232133313113313331333132313331323231323323233313111213   >>      C22212323232133313113313331333132313331323231323323233313111212   >>