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sub property {
  my $loc = ( split /,\s+/, $_[ 0 ] )[ 1 ];
  $loc =~ /^S\d+H(\d+)$/;
  return $1;
}

my @sorted =
  map  { $_->[0] }
  sort { $a->[1] <=> $b->[1] }
  map  { [ $_, property( $_ ) ] }
  @unsorted;