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: ['x', 'h', '1693', '5133', 'I', '1241', 't', '8635', '4501', 'R', '3991', '7139', 'F', '8893']

24, 8, 1693, 5133, 9, 1241, 20, 8635, 4501, 18, 3991, 7139, 6, 8893