node diagonal_int (i: int) returns (o1, o2 : int);
let
	(o1, o2) = (i, i);
tel

node main (i: int) returns (o1, o2, o3, o4: int);
let
    (o1, o2) = diagonal_int(i);
    (o3, o4) = diagonal_int(o1);
tel