def keyword_to_key(word,alphabet='ABCDEFGHIJKLMNOPQRSTUVWXYZ'):
    ''' convert a key word to a key by appending on the other letters of the alphabet.
    e.g. MONARCHY -> MONARCHYBDEFGIJKLPQSTUVWXZ
    '''
    ret = ''
    word = (word + alphabet).upper()
    for i in word:
        if i in ret: continue
        ret += i
    return ret