def makeInverseIndex(strList=[
        'dont put off what can be done today',
        'today is not tomorrow'
    ]):
    
    """
    task 0.6.6
    input is a given list of words making up a document
    output should be dictionary that maps each word to the set consisting
    of the document numbers of documents in which that word appears, an inverse index
    """

    docs = {i:set(doc.split()) for i, doc in enumerate(strList)}
    
    words = set()
    for i in docs: words = words | docs[i]

    response = {}
    for word in words:
        response[word] = {}
        
        for key in docs:
            response[word][key] = True if word in docs[key] else False

    return response