C22212323232133313113313331333132313331323132322221212233233323321   >>    C2221232323213331311331333133313231333132313232222121223323332332   <<    C22212323232133313113313331333132313331323132322221212233233323323   >>      C22212323232133313113313331333132313331323132322221212233233323322   >>