C22212323232133313113313331333132313231333132212132313111322211   >>    C2221232323213331311331333133313231323133313221213231311132221   <<    C22212323232133313113313331333132313231333132212132313111322213   >>      C22212323232133313113313331333132313231333132212132313111322212   >>