testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [[21, 23, 42], [1, 2, 4]]
    output: 
    - 1 : [1, 2, 4, 21, 23, 42]

  - name: "testcase 2"
    inputs:
    - 1: [[11, 41, 51], [21, 23, 42]]
    output:
    - 1 : [11, 21, 23, 41, 42, 51]

  - name: "testcase 3"
    inputs:
    - 1: [[2], [1, 2, 4], [25, 56, 66, 72]]
    output:
    - 1 : [1, 2, 2, 4, 25, 56, 66, 72]

  - name: "testcase 4"
    inputs:
    - 1: [[11, 41, 51], [2]]
    output:
    - 1 : [2, 11, 41, 51]
    
  - name: "testcase 5"
    inputs:
    - 1: [[2], [2], [1, 2, 4]]
    output:
    - 1 : [1, 2, 2, 2, 4]