C212212121212113313132333131311331323331323132233132313331333132212311   >>    C21221212121211331313233313131133132333132313223313231333133313221231   <<    C212212121212113313132333131311331323331323132233132313331333132212313   >>      C212212121212113313132333131311331323331323132233132313331333132212312   >>