C22212323232133313113313331333132313231333132212132311323311311   >>    C2221232323213331311331333133313231323133313221213231132331131   <<    C22212323232133313113313331333132313231333132212132311323311313   >>      C22212323232133313113313331333132313231333132212132311323311312   >>