Write a Python equivalent program for the Unix spell utility.You can use the dictionary at /usr/share/dict/words (if you machinedoes not have it, you can copy it from a Linux machine such asnpu29). The minimum requirement is to check if each word in thefile exists in the dictionary as is (case insensitive). Your spellchecker should inlcude at least two features: 1. Check the simpleplural forms (add s or es). 2. Check the simple verb past tense(add ed). What to submit: 1. Your Python source code 2. Your runoutput checking at least two files. One file contains at least 5unrecoginzed words and
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