C212212121212113313132333131311331323331323132233132313123232233231   >>    C21221212121211331313233313131133132333132313223313231312323223323   <<    C212212121212113313132333131311331323331323132233132313123232233233   >>      C212212121212113313132333131311331323331323132233132313123232233232   >>