- data raw;
- input code int;
- datalines;
- 1 0
- 1 1
- 1 2
- 1 3
- 1 0
- 1 1
- 1 2
- 2 0
- 2 1
- 2 2
- 2 3
- 2 0
- 2 1
- 2 2
- ;
- data out;
- set raw;
- if int=0 then group+1;
- run;
- data out(drop=flag group);
- flag=0;
- do _n_=1 by 1 until(last.group);
- set out;
- by group;
- flag+1;
- end;
- do _n_=1 to _n_;
- set out;
- if flag=4 then output;
- end;
- run;


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