C22212323232133313113313331333132313331323133313331213132323132233122121   >>    C2221232323213331311331333133313231333132313331333121313232313223312212   <<    C22212323232133313113313331333132313331323133313331213132323132233122123   >>      C22212323232133313113313331333132313331323133313331213132323132233122122   >>