C22212323232133313113313331333133313231323133313332132331213232211   >>    C2221232323213331311331333133313331323132313331333213233121323221   <<    C22212323232133313113313331333133313231323133313332132331213232213   >>      C22212323232133313113313331333133313231323133313332132331213232212   >>