def default_wsmap():
    """
    Default word to normalized synonym list
    """
    return {'a': '', 'of': '', 'the': '', 'i': '1', 'ii': '2', 'iii': '3',
        'iv': '4', 'v': '5', 'vi': '6', 'vii': '7', 'viii': '8', 'ix': '9',
        'x': '10', 'xi': '11', 'xii': '12', 'xiii': '13', 'xiv': '14', 'xv':
        '15', 'xvi': '16', 'xvii': '17', 'xviii': '18', 'xix': '19', 'xx':
        '20', '': ''}
