def __rsub__(self, y): return g.sub(y, self)
def __rsub__(self, y): return g.sub(y, self)
def __sub__(self, y): return g.sub(self, y)
def __sub__(self, y): return g.sub(self, y)
def __rsub__(self, y): return g.sub(y, self)
def __rsub__(self, y): return g.sub(y, self)
def __sub__(self, y): return g.sub(self, y)
def __sub__(self, y): return g.sub(self, y)