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: ['4827', '4269', '6595', 'H', 'D', '4253', 'q', '8437', '3485', 'w', 'j', 'e', '5957', 'l', 'P', 'z', '8629', '7171', '441', 'v', '7263', '5411', '213']

4827, 4269, 6595, 8, 4, 4253, 17, 8437, 3485, 23, 10, 5, 5957, 12, 16, 26, 8629, 7171, 441, 22, 7263, 5411, 213