# Two files contain words separated by spaces
# Please find same word in both files (uppercase
# lowercase letters are not important).
# Received list is printed in the file. Use Functional Programming.

def read_data(file_path):
    with open(file_path, "r") as file:
        words = []
        # we read the words in the file,
        # words separated by one space
        for line in file:
            words += line.split()
        print(words, flush=True)
        return words


def find_matching(list1, list2):
    matching = []
    for item_in_1 in list1:
        for item_in_2 in list2:
            if item_in_1.lower() == item_in_2.lower():
                matching.append(item_in_1)
    return matching

words1 = read_data("data.txt")
words2 = read_data("data2.txt")
matching = find_matching(words1, words2)
print(matching)