Here are two distribution you can use.
data _null_;
call streaminit(1234);
do i=1 to 10;
rank=ceil(6*rand('uniform'));
put i=1 rank=;
end;
run;
/*****************/
data _null_;
call streaminit(1234);
do i=1 to 10;
rank=rand('table',1/6,1/6,1/6,1/6,1/6,1/6);
put i=1 rank=;
end;
run;
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