def METHOD_NAME(self):
    """
    Return a block term ordering for the equation systems
    generated by self.
    EXAMPLES::
        sage: from sage.crypto.mq.mpolynomialsystemgenerator import MPolynomialSystemGenerator
        sage: msg = MPolynomialSystemGenerator()
        sage: msg.block_order()
        Traceback (most recent call last):
        ...
        NotImplementedError
    """
    raise NotImplementedError