---
ch-1:
  - function: greatestenglishletter
    arguments: PeRlwEeKLy
    result: L
  - arguments: ChaLlenge
    result: L
  - arguments: The
    result: ''
ch-2:
  - function: targetarray
    multiarg: true
    arguments:
      - - 0
        - 1
        - 2
        - 3
        - 4
      - - 0
        - 1
        - 2
        - 2
        - 1
    result:
      - 0
      - 4
      - 1
      - 3
      - 2
  - multiarg: true
    arguments:
      - - 1
        - 2
        - 3
        - 4
        - 0
      - - 0
        - 1
        - 2
        - 3
        - 0
    result:
      - 0
      - 1
      - 2
      - 3
      - 4
  - multiarg: true
    arguments:
      - - 1
      - - 0
    result:
      - 1