- data a ;
- input a b c n;
- cards;
- 1 2 3 1
- 2 1 3 2
- 2 5 7 4
- 3 5 4 6
- 4 5 6 7
- ;
- run;
- data b;
- input a b c n;
- cards;
- 1 2 3 1
- 2 1 3 2
- 2 1 5 3
- 2 5 7 4
- 2 3 4 5
- 3 5 4 6
- 4 5 6 7
- ;
- run;
2 1 3 2
. . . 3
2 5 7 4
. . . 5
3 5 4 6
4 5 6 7