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: ['9229', 'c', 'M', '9901', 'x', '6341', 'v', '8523', 'x', 'g', '4515', 'H', 'j', '7979', 'O', 'T', 'l', 'Q', 'O', '9787', 'o', 'Z', '1407', '3479', '3961', 'F', 'N', '7909', 'I', 'I', '5041', '7883', '4865', 'y', 'E', 'd', '8121', 'p']

9229, 3, 13, 9901, 24, 6341, 22, 8523, 24, 7, 4515, 8, 10, 7979, 15, 20, 12, 17, 15, 9787, 15, 26, 1407, 3479, 3961, 6, 14, 7909, 9, 9, 5041, 7883, 4865, 25, 5, 4, 8121, 16