Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['C', 'H', 'r', '4033', '8473', '3433', 'Z', 'b', 'C', '1003', 'S', 'E', 's', '4705', '3715', 'c', 's', 's', 'D', '709', '2137', '1035', '3607', '3461', 't', 'd', '5495', 'I', 'F', 'g', '1185', '6867', '5807', '4591', 'h', 'z', '6335', '7867', 'k']

3, 8, 18, 4033, 8473, 3433, 26, 2, 3, 1003, 19, 5, 19, 4705, 3715, 3, 19, 19, 4, 709, 2137, 1035, 3607, 3461, 20, 4, 5495, 9, 6, 7, 1185, 6867, 5807, 4591, 8, 26, 6335, 7867, 11