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: ['9983', 'I', 'T', '55', 'D', '8941', '3843', 'H', 'S', '3827', 'H', 'm', 'J', 'M', 's', '6045', 'l', 'F', '4335', 'u', 'i', '5583', '9743', 'w', 'e', '5337', 'y', '731', '2231', 'V', '9801', 'y', '3869']

9983, 9, 20, 55, 4, 8941, 3843, 8, 19, 3827, 8, 13, 10, 13, 19, 6045, 12, 6, 4335, 21, 9, 5583, 9743, 23, 5, 5337, 25, 731, 2231, 22, 9801, 25, 3869