Start
  p
    Nodes[Nt]
      t_0
        identifier@(1:1-1:2)='i'
      t_0
        identifier@(1:3-1:4)='f'
      t_1
        if@(2:1-2:3)='if'
      t_0
        identifier@(3:1-3:4)='ify'
  Eof@(4:1-4:1)=''