1 length = 3
   2 i caught an error
   3 1,2,3
   4 4
   5 length = 3
   6 length = 3
   7 I caught an error
   8 1,2,
   9 length = 3
  10 I caught an error
  11 1,2,
  12 length = 3
  13 I caught an error
  14 1,2,
  15 length = 3
  16 I caught an error
  17 1,2,
  18 length = 3
  19 I caught an error
  20 1,2,
  21 1,2,
  22 undefined
  23 length = 3