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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 spell(word):
 """most likely correction for everything up to a double typo"""

    w = Word(word)
    candidates = (common([word]) or exact([word]) or known([word]) or
                  known(w.typos()) or common(w.double_typos()) or
                  [word])
    correction = max(candidates, key=NLP_COUNTS.get)
    return get_case(word, correction)