testcases:
  - name: "testcase 1"
    inputs:
      - 1 : "XYZYX"
      - 2 : "XYZ"
    output: 
      - 1 : "XYZ"
  - name: "testcase 2"
    inputs:
    - 1: "XYZYX"
    - 2: "XYZ"
    output:
    - 1 : "XYZ"
  - name: "testcase 3"
    inputs:
    - 1: "ABXYZJKLSNFC"
    - 2: "ABC"
    output:
    - 1 : "ABXYZJKLSNFC"
  - name: "testcase 4"
    inputs:
    - 1: "AAAAAAAAAAA"
    - 2: "A"
    output:
    - 1 : "A"
  - name: "testcase 5"
    inputs:
    - 1: "ABDFGDCKAB"
    - 2: "ABCD"
    output:
    - 1 : "DCKAB"
  - name: "testcase 6"
    inputs:
      - 1: "XYZA"
      - 2: "AZYX"
    output:
      - 1 : "XYZA"