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: ['7245', '5733', 'J', 'A', '3461', 't', 'j', 'A', '1105', '6505', 'a', '169', '2969', '247', '5041', 'Y', '6039', 'z', 'F', 'a', 'J', '909', '9109', 'U', 'O', 'B', 'j', '5597', 'K', '2219', 'F', '4929', 'j', 'E', '4729', 'q', '4979']

7245, 5733, 10, 1, 3461, 20, 10, 1, 1105, 6505, 1, 169, 2969, 247, 5041, 25, 6039, 26, 6, 1, 10, 909, 9109, 21, 15, 2, 10, 5597, 11, 2219, 6, 4929, 10, 5, 4729, 17, 4979