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', 'D', '6287', 'C', 'p', 'J', '365', 'E', '4251', 'L', '6325', '283', '1549', 'j', 'J', 'X', 'A', 'i', '1075', 'W', '2595', 'A']

10, 4, 6287, 3, 16, 10, 365, 5, 4251, 12, 6325, 283, 1549, 10, 10, 24, 1, 9, 1075, 23, 2595, 1