Step 6: word_counter2.pl Copy your previous program word_counter.pl to word_counter2.pl Add a subroutine f to the program word_counter2.pl that takes two parameters: a word and a reference to the hash that stores the frequencies of the words, and returns frequency of the input word, or 0 if it is not present. Test the program on TomSawyer.txt to find frequencies of the words 'Tom', 'Sawyer', and 'Huck Submit the program word_counter2.pl Step 6: word_counter2.pl Copy your previous program word_counter.pl to word_counter2.pl Add a subroutine f to the program word_counter2.pl that takes two parameters: a word and a reference to the hash that stores the frequencies of the words, and returns frequency of the input word, or 0 if it is not present. Test the program on TomSawyer.txt to find frequencies of the words 'Tom', 'Sawyer', and 'Huck Submit the program word_counter2.pl