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: ['3969', '3341', 'M', 'X', '7339', 'd', '1911', '3083', '5401', '5301', '6017', '911', 'S', '6853', '5937', 'k', 'h', '589', 'O', '7829', 'W', 'P', '9109', '5227', 'w', 'V']

3969, 3341, 13, 24, 7339, 4, 1911, 3083, 5401, 5301, 6017, 911, 19, 6853, 5937, 11, 8, 589, 15, 7829, 23, 16, 9109, 5227, 23, 22