C22212323232133313113313331333132313331323133313331213132313213112211   >>    C2221232323213331311331333133313231333132313331333121313231321311221   <<    C22212323232133313113313331333132313331323133313331213132313213112213   >>      C22212323232133313113313331333132313331323133313331213132313213112212   >>