C22212323232133313113313331333132313331323133313331213132323212123121   >>    C2221232323213331311331333133313231333132313331333121313232321212312   <<    C22212323232133313113313331333132313331323133313331213132323212123123   >>      C22212323232133313113313331333132313331323133313331213132323212123122   >>