C22212323232133313113313331333132313331323132322221212231121321   >>    C2221232323213331311331333133313231333132313232222121223112132   <<    C22212323232133313113313331333132313331323132322221212231121323   >>      C22212323232133313113313331333132313331323132322221212231121322   >>