- setup:
  cleanup:
  args:
  input:    |
            |[ 1 2 ]
            |[ 3 4 ]
            |1 4
  output:   |
            |[ 1 2 3 4 ]
- setup:
  cleanup:
  args:
  input:    |
            |[ 1 2 3 ]
            |[ 4 5 6 ]
            |3 2
  output:   |
            |[ 1 2 ]
            |[ 3 4 ]
            |[ 5 6 ]
- setup:
  cleanup:
  args:
  input:    |
            |[ 1 2 ]
            |3 2
  output:   |
            |0