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: ['7179', '2261', '199', '6739', 'j', '7423', 'a', 'W', '9753', '521', 'Y', '5795', 'm', 'l', '1911', '6773', 'h', '863', 'P', 'W', 'r', '4087', 'G', '6987', 'j', '5923', '4041', 'X', 'y', 'N', 'P', '5669', 'l', 'E', '4619', '221', 'q', '23', '1341', 'Y']

7179, 2261, 199, 6739, 10, 7423, 1, 23, 9753, 521, 25, 5795, 13, 12, 1911, 6773, 8, 863, 16, 23, 18, 4087, 7, 6987, 10, 5923, 4041, 24, 25, 14, 16, 5669, 12, 5, 4619, 221, 17, 23, 1341, 25