What will be the output of the following Python code?

What will be the output of the following Python code?

class X:
    def speak(self):
        print('X speaks')

class Y(X):
    def speak(self):
        print('Y speaks')

class Z(X):
    def speak(self):
        print('Z speaks')

class W(Y, Z):
    pass

w = W()
w.speak()