OPTIONS LS=72 PS=60;

DATA mix; INPUT x1 $ x2 x3 @@; CARDS;
   A   A  29.9      56
   A      11.4      69 
   A      25.3      67
   A      16.5      99
   B      26.6      89
   B      23.7      60
   B      28.5      56
   B      14.2      45
   B      17.9      77
  ;
PROC PRINT DATA=mix;
RUN;