let fun loop words = 
	receive
		{from, msg} ->
			from ! {self(), msg ++ words}, loop(words);
			false -> false 
	end
in let var pid = spawn(loop, [" world!"]) in 
	let fun go words =
		pid ! {self(), words}, 
		receive
			{pid2, msg} ->
				pid2 ! false, msg
		end
	in go("Hello")