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: ['L', 'p', 'o', '8225', '3715', '2371', 'p', 'h', '2343', 'y', '6563', 'c', 'm', '7255', '3603', 'v', 'B', '1417', 'l', '7029', 'm', '3981']

12, 16, 15, 8225, 3715, 2371, 16, 8, 2343, 25, 6563, 3, 13, 7255, 3603, 22, 2, 1417, 12, 7029, 13, 3981