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: ['8387', 'H', 'g', '7673', 'n', 'X', 'j', '2323', 'J', 'a', '8835', '5531', 'n', 'V', 'a', '2049', '9367', '3825', '3019', '6683', '1535', '6665', 'i']

8387, 8, 7, 7673, 14, 24, 10, 2323, 10, 1, 8835, 5531, 14, 22, 1, 2049, 9367, 3825, 3019, 6683, 1535, 6665, 9