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: ['T', '7805', 'M', 'o', '9325', '9135', '5987', '9723', '8873', '2981', '7495', '393', '9717', '1923', 'N', '3739', '4811', '6039', '909', '9625', 'm', '379', '9197', 'I', '8839', 'H']

20, 7805, 13, 15, 9325, 9135, 5987, 9723, 8873, 2981, 7495, 393, 9717, 1923, 14, 3739, 4811, 6039, 909, 9625, 13, 379, 9197, 9, 8839, 8