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: ['5793', 'I', '3817', '6835', '1369', 'A', 'R', '3819', 't', '6017', 'e', 'A', 't', '7337', 'I', 'n', 'e', '4097', '1815', '6713', '4365', '4865', 'A', 'd', 'K', 'n', 'l', 'a', '6517', 'z', '4749', '2371', 'G', '6277', '1157', 'i']

5793, 9, 3817, 6835, 1369, 1, 18, 3819, 20, 6017, 5, 1, 20, 7337, 9, 14, 5, 4097, 1815, 6713, 4365, 4865, 1, 4, 11, 14, 12, 1, 6517, 26, 4749, 2371, 7, 6277, 1157, 9