C22212323232133313113313331333132313331323132313331132213232311   >>    C2221232323213331311331333133313231333132313231333113221323231   <<    C22212323232133313113313331333132313331323132313331132213232313   >>      C22212323232133313113313331333132313331323132313331132213232312   >>