C22212323232133313113313331333132313331323132313331132212313221   >>    C2221232323213331311331333133313231333132313231333113221231322   <<    C22212323232133313113313331333132313331323132313331132212313223   >>      C22212323232133313113313331333132313331323132313331132212313222   >>