C22212323232133313113313331333132313231333132311233123311112211221   >>    C2221232323213331311331333133313231323133313231123312331111221122   <<    C22212323232133313113313331333132313231333132311233123311112211223   >>      C22212323232133313113313331333132313231333132311233123311112211222   >>