def _randomized_hands():
    '''
    :return: 4 hands, obtained by shuffling the 28 dominoes used in
             this variation of the game, and distributing them evenly
    '''
    all_dominoes = [dominoes.Domino(i, j) for i in range(7) for j in range(i, 7)]
    random.shuffle(all_dominoes)
    return [dominoes.Hand(all_dominoes[0:7]), dominoes.Hand(all_dominoes[7:14]),
            dominoes.Hand(all_dominoes[14:21]), dominoes.Hand(all_dominoes[21:28])]
:return: 4 hands, obtained by shuffling the 28 dominoes used in
             this variation of the game, and distributing them evenly