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: ['j', 'Q', '9041', 'W', '4537', 'U', '6193', '1435', '3569', 'j', 'o', 'x', '2411', 'Q', '9439', '7627', 'R', 'z']

10, 17, 9041, 23, 4537, 21, 6193, 1435, 3569, 10, 15, 24, 2411, 17, 9439, 7627, 18, 26