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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def afw_completion(afw):
 """ Side effect on input! Complete the afw adding not present transitions and marking them as False. :param dict afw: input AFW. """


    for state in afw['states']:
        for a in afw['alphabet']:
            if (state, a) not in afw['transitions']:
                afw['transitions'][state, a] = 'False'
    return afw