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: ['C', 'F', '147', 'x', 'w', '8673', 'R', '6285', 'Q', '4633', '3133', 'b', '657', '1843', '5119', 'j', 'J', 'i', '5493', '4549', '8651', 'W', '3489']

3, 6, 147, 24, 23, 8673, 18, 6285, 17, 4633, 3133, 2, 657, 1843, 5119, 10, 10, 9, 5493, 4549, 8651, 23, 3489