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: ['n', 'o', '1245', 'I', 'G', '5729', '4183', 'J', 'E', '6801', 'M', '4761', 'd', 'e', '9591', '1897', '9871', '5575', 'L', 'g', '4955', '1829', 'H', '7619', '49', '7343', '7547', '8675', '8097', 'd', 'G', '453', 'D', 'v']

14, 15, 1245, 9, 7, 5729, 4183, 10, 5, 6801, 13, 4761, 4, 5, 9591, 1897, 9871, 5575, 12, 7, 4955, 1829, 8, 7619, 49, 7343, 7547, 8675, 8097, 4, 7, 453, 4, 22