C22212323232133313113313331333132313231333132212132312132323231   >>    C2221232323213331311331333133313231323133313221213231213232323   <<    C22212323232133313113313331333132313231333132212132312132323233   >>      C22212323232133313113313331333132313231333132212132312132323232   >>