options ls=80;

data castle;
input factor1 $ factor2 $ y;
cards;
1 1 47
1 1 43
1 2 46
1 2 40
2 1 62
2 1 68
2 2 67
2 2 71
3 1 41 
3 1 39
3 2 42
3 2 46
;

proc glm data=castle;
 class factor1 factor2;
   model y=factor1 factor2; 

proc glm data=castle;
 class factor1 factor2;
   model y=factor1|factor2;