data test;
   input x1-x15;
   id=_n_;
cards;
1 . 3 . 1 . 2 . 3 . 5 . 1 . 3
4 8 . . . 1 3 2 1 3 1 3 4 5 6
7 9 4 . . . . . . . . . . . .
;
run;
data need;
   set test;
   if nmiss(of x1-x15)<5 then output;
run;