10     def cm(cls):  member in A
17     def cm(cls):  member in B
18         return (cls, super().cm(), 'B')
24     def cm(cls):  member in C
25         return (cls, super().cm(), 'C')
30     def cm(cls):  member in D
31         return (cls, super().cm(), 'D')
65         self.assertEqual(A.cm(), (A, 'A'))
66         self.assertEqual(A().cm(), (A, 'A'))
67         self.assertEqual(G.cm(), (G, 'A'))
68         self.assertEqual(G().cm(), (G, 'A'))
72         self.assertEqual(d.cm(), (d, (D, (D, (D, 'A'), 'B'), 'C'), 'D'))
74         self.assertEqual(e.cm(), (e, (E, (E, (E, 'A'), 'B'), 'C'), 'D'))