testcases:
  - name: "testcase 1"
    inputs:
    - 1 : "{}[]{}[{}])"
    output: 
    - 1 : False
  - name: "testcase 2"
    inputs:
    - 1 : "(){[{()}]}"
    output: 
    - 1 : True
  - name: "testcase 3"
    inputs:
    - 1 : "((((("
    output: 
    - 1 : False
  - name: "testcase 4"
    inputs:
    - 1 : "{{()}"
    output: 
    - 1 : False
  - name: "testcase 5"
    inputs:
    - 1 : "{()}}"
    output: 
    - 1 : False