text: import hypergraph as hg
  
  graph1 = hg.Graph()
  with graph1.as_default():
      hg.output() << (hg.delay(units=2) << hg.input_all())
  
  ctx = hg.ExecutionContext()
  with ctx.as_default():
      for i in range(5):
          print(graph1(i))
  