program pari;
type
univ=set of 1..255;
var
a:univ;
i,j:integer;
begin
a:=[1,2,3,4,5];
for i:=1 to 255 do
if i in a then
for j:=1 to 255 do
if (j in a) and (i>j) then
writeln('(',i,',',j,')');
end.