---
ch-1:
  - function: maxwords
    arguments:
      - Perl and Raku belong to the same family.
      - I love Perl.
      - The Perl and Raku Conference.
    result: 8
  - arguments:
      - The Weekly Challenge.
      - Python is the most popular guest language.
      - Team PWC has over 300 members.
    result: 7
ch-2:
  - function: leftrightsumdiff
    arguments:
      - 10
      - 4
      - 8
      - 3
    result:
      - 15
      - 1
      - 11
      - 22
  - arguments:
      - 1
    result:
      - 0
  - arguments:
      - 1
      - 2
      - 3
      - 4
      - 5
    result:
      - 14
      - 11
      - 6
      - 1
      - 10