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: ['I', 'A', 'Z', 'g', 'E', '3623', 'E', 'N', '8775', 'Z', '2081', '1609', '4709', 'm', 'u', 'T', 'N', '5993', 'u', '7885', '1615', 'i', '3201', '5909', 'c', '4161']

9, 1, 26, 7, 5, 3623, 5, 14, 8775, 26, 2081, 1609, 4709, 13, 21, 20, 14, 5993, 21, 7885, 1615, 9, 3201, 5909, 3, 4161