what about

push @{$lineFileContains{$r[3]}}, [@r[3..$#r]];
[download]

and

foreach (@{$lineFileContains{$_}}) {
   print "\t$_->[0]\t$_->[1]\n";
}
[download]

and

are you sure about

push @{$lineFileContains{$r[3]}},
[download]

or should it be

push @{$lineFileContains{$r[2]}},
[download]

???