C22212323232133313113313331333132313231333132212132311221122211   >>    C2221232323213331311331333133313231323133313221213231122112221   <<    C22212323232133313113313331333132313231333132212132311221122213   >>      C22212323232133313113313331333132313231333132212132311221122212   >>