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  1. or download this
    line 1 have some string here and Hash_key_4: Hash_value_4_identical_to
    +_Hash_value_9
    line 2 have some string here and Hash_key_5: Hash_value_5
    ...
    line 10 have some string here and Hash_key_10: Hash_value_10
    ....
    ....
    
  2. or download this
    Hash_key_1 => Hash_value_1
    Hash_key_2 => Hash_value_2_identical_to_Hash_value_7
    ...
    Hash_key_10 => Hash_value_10
    ....
    ....
    
  3. or download this
    my %hash = ();
    my $filename = "input_text.txt";
    ...
           print "$line has $hash{$key} and value is $hash{key}\n";
        }
    }