C22212323232133313113313331333132313331323132323131232323112232211   >>    C2221232323213331311331333133313231333132313232313123232311223221   <<    C22212323232133313113313331333132313331323132323131232323112232213   >>      C22212323232133313113313331333132313331323132323131232323112232212   >>