def is_palindrome(word):
    if len(word) <= 0:
        return True
    else:
        if word[0] == word[-1]:
            return is_palindrome(word[1:-1])
        else:
            return False


words = ['tacocat', 'radar', 'yak', 'radar', 'kayjak']

for word in words:
    print(is_palindrome(word))