testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [1]
    output: 
    - 1 : [[1]]
  - name: "testcase 2"
    inputs:
    - 1: [1,2]
    output:
    - 1 : [[], [1], [2], [1, 2]]
  - name: "testcase 3"
    inputs:
    - 1: [2,5,7]
    output:
    - 1 : [[], [2], [5], [2, 5], [7], [2, 7], [5, 7], [2, 5, 7]]
  - name: "testcase 4"
    inputs:
    - 1: [1,2,3,4]
    output:
    - 1 : [[], [1], [2], [1, 2], [3], [1, 3], [2, 3], [1, 2, 3], [4], [1, 4], [2, 4], [1, 2, 4], [3, 4], [1, 3, 4], [2, 3, 4], [1, 2, 3, 4]]
  - name: "testcase 5"
    inputs:
    - 1: [0]
    output:
    - 1 : [[], [0]]
  - name: "testcase 6"
    inputs:
    - 1: [7,3,1,5]
    output:
    - 1 : [[], [7], [3], [3, 7], [1], [1, 7], [1, 3], [1, 3, 7], [5], [5, 7], [3, 5], [3, 5, 7], [1, 5], [1, 5, 7], [1, 3, 5], [1, 3, 5, 7]]
  - name: "testcase 7"
    inputs:
    - 1: [-1,-10,-3, 1, 2, 4]
    output:
    - 1: [[],[-1],[-10],[-10,-1],[-3],[-3,-1],[-10,-3],[-10,-3,-1],[1],[-1,1],[-10,1],[-10,-1,1],[-3,1],[-3,-1,1],[-10,-3,1],[-10,-3,-1,1],[2],[-1,2],[-10,2],[-10,-1,2],[-3,2],[-3,-1,2],[-10,-3,2],[-10,-3,-1,2],[1,2],[-1,1,2],[-10,1,2],[-10,-1,1,2],[-3,1,2],[-3,-1,1,2],[-10,-3,1,2],[-10,-3,-1,1,2],[4],[-1,4],[-10,4],[-10,-1,4],[-3,4],[-3,-1,4],[-10,-3,4],[-10,-3,-1,4],[1,4],[-1,1,4],[-10,1,4],[-10,-1,1,4],[-3,1,4],[-3,-1,1,4],[-10,-3,1,4],[-10,-3,-1,1,4],[2,4],[-1,2,4],[-10,2,4],[-10,-1,2,4],[-3,2,4],[-3,-1,2,4],[-10,-3,2,4],[-10,-3,-1,2,4],[1,2,4],[-1,1,2,4],[-10,1,2,4],[-10,-1,1,2,4],[-3,1,2,4],[-3,-1,1,2,4],[-10,-3,1,2,4],[-10,-3,-1,1,2,4]]