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: ['e', 'd', '6573', 'k', 'W', '6777', '7771', 'L', '3689', '4341', 'A', 'Y', 'l', '6569', 't', 'c', 'S', '2005', '373', 'x', 'K', '6611', '6697', 'X', 'D', '1233', '6977', '8783']

5, 4, 6573, 11, 23, 6777, 7771, 12, 3689, 4341, 1, 25, 12, 6569, 20, 3, 19, 2005, 373, 24, 11, 6611, 6697, 24, 4, 1233, 6977, 8783