C22212323232133313113313331333132313231333132212132311231212111   >>    C2221232323213331311331333133313231323133313221213231123121211   <<    C22212323232133313113313331333132313231333132212132311231212113   >>      C22212323232133313113313331333132313231333132212132311231212112   >>