testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [["Emma", "emma@mail.com", "emma_work@mail.com"], ["Bob", "bob_home@mail.com", "bob123@mail.com"], ["Emma", "emma_art@mail.com", "emma_work@mail.com"], ["Bob", "bob321@mail.com"]]
    output: 
    - 1 : [['Emma', 'emma@mail.com', 'emma_art@mail.com', 'emma_work@mail.com'], ['Bob', 'bob123@mail.com', 'bob_home@mail.com'], ['Bob', 'bob321@mail.com']]
  - name: "testcase 2"
    inputs:
    - 1 : [["John","johnsmith@mail.com","john_newyork@mail.com"],["John","johnsmith@mail.com","john00@mail.com"],["Mary","mary@mail.com"],["John","johnnybravo@mail.com"]]
    output: 
    - 1 : [['John', 'john00@mail.com', 'john_newyork@mail.com', 'johnsmith@mail.com'],['Mary', 'mary@mail.com'],['John', 'johnnybravo@mail.com']]
  - name: "testcase 3"
    inputs:
    - 1 : [["Sarah", "sarah@mail.com", "sh@mail.com"],["Sarah", "sarah1@mail.com", "sarahh@mail.com"], ["Sarah", "sh3@mail.com"]]
    output: 
    - 1 : [['Sarah', 'sarah@mail.com', 'sh@mail.com'],['Sarah', 'sarah1@mail.com', 'sarahh@mail.com'],['Sarah', 'sh3@mail.com']]
  - name: "testcase 4"
    inputs:
    - 1 : [["Alice", "alice@mail.com"], ["Alice", "alice_alice@mail.com", "alice@mail.com"], ["Alice", "alice@mail.com", "alice123@mail.com", "aalicee@mail.com"]]
    output: 
    - 1 : [['Alice', 'aalicee@mail.com', 'alice123@mail.com', 'alice@mail.com', 'alice_alice@mail.com']]
  - name: "testcase 5"
    inputs:
    - 1 : [["Gabe","Gabe0@m.co","Gabe3@m.co","Gabe1@m.co"],["Kevin","Kevin3@m.co","Kevin5@m.co","Kevin0@m.co"],["Ethan","Ethan5@m.co","Ethan4@m.co","Ethan0@m.co"],["Hanzo","Hanzo3@m.co","Hanzo1@m.co","Hanzo0@m.co"],["Fern","Fern5@m.co","Fern1@m.co","Fern0@m.co"]]
    output: 
    - 1 : [['Gabe', 'Gabe0@m.co', 'Gabe1@m.co', 'Gabe3@m.co'],['Kevin', 'Kevin0@m.co', 'Kevin3@m.co', 'Kevin5@m.co'],['Ethan', 'Ethan0@m.co', 'Ethan4@m.co', 'Ethan5@m.co'],['Hanzo', 'Hanzo0@m.co', 'Hanzo1@m.co', 'Hanzo3@m.co'], ['Fern', 'Fern0@m.co', 'Fern1@m.co', 'Fern5@m.co']]