from word_dictionary import *


def main(input_1, input_2):
    result = []
    word_dict = WordDictionary()
    result.append(None)
    for i in range(1, len(input_1)):
        if input_1[i] == "add_word":
            res = word_dict.add_word(input_2[i][0])
            result.append(None)
        elif input_1[i] == "search_word":
            res = word_dict.search_word(input_2[i][0])
            result.append(res)
        elif input_1[i] == "get_words":
            res = word_dict.get_words()
            if res:
                res.sort()
            result.append(res)

    return result