testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [[6, 9], [2, 7]]
    output: 
    - 1 : [[2, 6], [7, 9]]
  - name: "testcase 2"
    inputs:
    - 1: [[1]]
    output:
    - 1 : [[1]]
  - name: "testcase 3"
    inputs:
    - 1: [[2, 14, 8], [12, 7, 14], [3, 3, 7]]
    output:
    - 1 : [[3, 12, 2], [3, 7, 14], [7, 14, 8]]
  - name: "testcase 4"
    inputs:
    - 1: [[3, 1, 1, 7], [15, 12, 13, 13], [4, 14, 12, 4], [10, 5, 11, 12]]
    output:
    - 1 : [[10, 4, 15, 3], [5, 14, 12, 1], [11, 12, 13, 1], [12, 4, 13, 7]]
  - name: "testcase 5"
    inputs:
    - 1: [[10, 1, 14, 11, 14], [13, 4, 8, 2, 13], [10, 19, 1, 6, 8], [20, 10, 8, 2, 12], [15, 6, 8, 8, 18]]
    output:
    - 1 : [[15, 20, 10, 13, 10], [6, 10, 19, 4, 1], [8, 8, 1, 8, 14], [8, 2, 6, 2, 11], [18, 12, 8, 13, 14]]