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: ['l', 'K', 'r', 'q', 'T', '6045', '5527', '8599', 'G', '3115', 'F', '4439', '7371', '2629', 'u', '5617', '7741', '4095', 'q', '8669', 'z', 'I', '1913', '5187', 'G', 'M', '2845', '4431', 'M', 'W', 'm', '399', 'e', '7323', '4543']

12, 11, 18, 17, 20, 6045, 5527, 8599, 7, 3115, 6, 4439, 7371, 2629, 21, 5617, 7741, 4095, 17, 8669, 26, 9, 1913, 5187, 7, 13, 2845, 4431, 13, 23, 13, 399, 5, 7323, 4543