testcases:
  - name: "testcase 1"
    inputs:
    - 1 : "10"
    - 2 : "11"
    output: 
    - 1 : "101"
  - name: "testcase 2"
    inputs:
    - 1: "1111"
    - 2: "1011"
    output:
    - 1 : "11010"
  - name: "testcase 3"
    inputs:
    - 1: "101010"
    - 2: "110110"
    output:
    - 1 : "1100000"
  - name: "testcase 4"
    inputs:
    - 1: "1111"
    - 2: "111"
    output:
    - 1 : "10110"
  - name: "testcase 5"
    inputs:
    - 1: "101"
    - 2: "1101"
    output:
    - 1 : "10010"