@function ballistic-initial($list, $nth: 1) {
  @if length($list) == 0 {
    @return null;
  }

  @if length($list) == 1 {
    @return nth($list, 1);
  }

  $output: ();

  @for $i from 1 through length($list) - $nth {
    $output: append($output, nth($list, $i), comma);
  }

  @return $output;
}