Miscellany

array(3) {
  [1]=>
  array(2) {
    [1]=>
    array(1) {
      [0]=>
      string(2) "25"
    }
    [2]=>
    array(2) {
      [0]=>
      string(2) "16"
      [1]=>
      string(2) "15"
    }
  }
  [2]=>
  array(1) {
    [1]=>
    array(3) {
      [0]=>
      string(2) "15"
      [1]=>
      string(2) "17"
      [2]=>
      string(2) "22"
    }
  }
  [3]=>
  array(2) {
    [1]=>
    array(3) {
      [0]=>
      string(2) "48"
      [1]=>
      string(2) "49"
      [2]=>
      string(2) "50"
    }
    [2]=>
    array(2) {
      [0]=>
      string(2) "49"
      [1]=>
      string(2) "50"
    }
  }
}