data circuit;
input fixture layout @;
do operator=1 to 4;
 input time @;
 output;
end;
cards;
 1  1  22  23  28  25 
 1  2  26  27  28  24 
 1  1  24  24  29  23 
 1  2  28  25  25  23 
 2  1  30  29  30  27 
 2  2  29  30  24  28 
 2  1  27  28  32  25 
 2  2  28  27  23  30 
 3  1  25  24  27  26 
 3  2  27  26  24  28 
 3  1  21  22  25  23 
 3  2  25  24  27  27 
;