array(3) {
  [1]=>
  array(1) {
    [0]=>
    int(2772)
  }
  [9]=>
  array(3) {
    [0]=>
    int(7575)
    [1]=>
    int(9268)
    [2]=>
    int(9361)
  }
  [21]=>
  array(1) {
    [0]=>
    int(9614)
  }
}