{
  a: (0 to 9) map ($ + 1),
  b: (0 to 9) reduce ($$ + $),
  c: (0 to 9) filter $ > 4,
  d: (0 to 9) groupBy $,
  e: (-9 to -1) orderBy $,
  f: (0 to 9)[4],
  g: (0 to 9),
  h: (4 to 1),
  i: in1.zero to in1.nine,
  j: in1.zero to in1.nine,
  k: 1 to 9
}