begin comment library 1; integer i, p; i := 0; for p := 1 step 1 until 4 do begin own integer i; if p = 1 then i := 3 else i := 2 * i; begin own integer j, i; if i = 0 then j := 4 else j := 4 * i; outreal(1, j); end; i := 0; end; i := 0; end