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: ['3269', '7141', 'F', '6701', '3665', 'a', 'q', 'A', '6177', '5019', '293', '5073', '379', '3143', 'd', 'y', 'I', '1275', 'd', 'I', '8497', '803', '5581', 'Z', '9315', '5839', 'o', 'S', '9309', 'u', '151', 'P']

3269, 7141, 6, 6701, 3665, 1, 17, 1, 6177, 5019, 293, 5073, 379, 3143, 4, 25, 9, 1275, 4, 9, 8497, 803, 5581, 26, 9315, 5839, 15, 19, 9309, 21, 151, 16