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: ['2885', '4377', 'f', '3657', '5847', '9575', '3995', 'G', '7737', '7861', 'Z', 'u', 'V', '7487', 'p', 'N', '375', 'J', '4335', '1309', 'O', '1103', '117', 'I', 'Q', 'Z', 'U', 'v', '5415', 'H', 'V', 'F', '4473', 'd', '4071', '2975', 'V', '8649', '649']

2885, 4377, 6, 3657, 5847, 9575, 3995, 7, 7737, 7861, 26, 21, 22, 7487, 16, 14, 375, 10, 4335, 1309, 15, 1103, 117, 9, 17, 26, 21, 22, 5415, 8, 22, 6, 4473, 4, 4071, 2975, 22, 8649, 649