Start
  e_sub
    e_add
      e_int
        int@(1:1-1:2)='1'
      '+'@(1:2-1:3)
      e_div
        e_mul
          e_int
            int@(1:3-1:4)='2'
          '*'@(1:4-1:5)
          e_int
            int@(1:5-1:6)='3'
        '/'@(1:6-1:7)
        e_int
          int@(1:7-1:8)='4'
    '-'@(1:8-1:9)
    e_neg
      '-'@(1:9-1:10)
      e_int
        int@(1:10-1:11)='5'
  Eof@(2:1-2:1)=''