def countwords(lst):
    word_count = {}

    for word in lst:
        if word in word_count:
            word_count[word] += 1
        else:
            word_count[word] = 1
    return word_count
    
def wordsOfLength(w, n):
    result = []
    for word, count in w.items():
        if count >= n:
            result.append(word)
    return result
    
def stopWords(text, k):
    l = text.split()
    w = countwords(l)
    results = wordsOfLength(w, k)
    return results