C212212121212113313132333131311331323331323132233132311331323233321   >>    C21221212121211331313233313131133132333132313223313231133132323332   <<    C212212121212113313132333131311331323331323132233132311331323233323   >>      C212212121212113313132333131311331323331323132233132311331323233322   >>