def is_palindrome(word):
    """(str) -> bool

    Precondition: word.isalpha and word.islower hold True
    Return True iff word is palindrome

    >>>is_palindrome('radar'):
    True
    >>>is_palindrome('cats'):
    False
    >>>is_palindrome('toot'):
    True
    """

    i = 0
    while i <= (len(word))//2:
        j = -(i+1)
        if word[i] == word[j]:
        	i = i+1
        else:
           	return False
    return True

def is_palindromic_phrase(phrase):
    """
    (str) -> bool

    Precondition: if apostrophe used ensure that the different one is to denote that the phrase is a string
    Return True iff phrase, regardless of case and non-alphabetic characters,
    is a palindrome

    >>>is_palindromic_phrase("Madam, I'm Adam"):
    True
    >>>is_palindromic_phrase('Hello world!'):
    False
    >>>is_palindromic_phrase('3 nurses run'):
    True
    """

    for ch in phrase:
        if not ch.isalpha():
            phrase = phrase.replace(ch, '')

    phrase = phrase.lower()

    return is_palindrome(phrase)

def get_odd_palindrome_at():
    """
    (str, int) -> str



    >>>get_odd_palindrome_at('fadar',2)
    ada
    >>>get_odd_palindrome_at('statistics',2)
    tat
    >>>get_odd_palindrome_at('word',3)
    """