Generate pseudo mnemonic phrase.

        :param length: Number of words.
        :return: Mnemonic code.

def mnemonic_phrase(self, length: int = 12) -> str:
        """Generate pseudo mnemonic phrase.

        :param length: Number of words.
        :return: Mnemonic code.
        """
        words = self.__words['normal']
        return ' '.join(self.random.choice(words) for _ in range(length))