---
ch-1:
  - function: shortestdistance
    arguments:
      - 3
      - 2
      - 3
      - 2
      - 2
      - 2
    result:
      - - 2
        - 2
      - - 2
        - 2
      - - 3
        - 3
  - arguments:
      - 1
      - 2
      - 3
      - 4
    result: []
ch-2:
  - function: distringmatch
    arguments: IDID
    result:
      - 0
      - 4
      - 1
      - 3
      - 2
  - arguments: III
    result:
      - 0
      - 1
      - 2
      - 3
  - arguments: DDI
    result:
      - 3
      - 2
      - 0
      - 1