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: ['7083', '25', 'j', '4467', '9999', 'i', '1241', '5359', '9555', 'e', '789', 'L', 'q', 'm', '11', 'K', 'k', '5109', '4873', '4565', 'l', '3851', 'x', 'u', '5799', 'r', '8427']

7083, 25, 10, 4467, 9999, 9, 1241, 5359, 9555, 5, 789, 12, 17, 13, 11, 11, 11, 5109, 4873, 4565, 12, 3851, 24, 21, 5799, 18, 8427