while (<IN>) {
  s/,//;
  @Fields = split ' ';
  $Lable = $Fields[-2];  #sic -- should be "Label"
  $Slot = $Fields[2];
  # You never set $Type, so the next line will get
  # a "use of undefined value" warning.
  push @List, "$Slot $Type $Lable";
}
# You also never write anything to OUT