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: ['p', 'p', 'E', '1141', '4471', 'P', 'G', 's', '4609', 'z', '5753', 'F', 'n', '1033', 'X', 'W', 'L', 'b', 'L', 'i', 'w', 'W', 'q', 'x', 'N', 'X', 'o', 'X', '3299', 'H', 'v', '6875', '401', 'S', 'V', 'S', 'J', 'A', '7529']

16, 16, 5, 1141, 4471, 16, 7, 19, 4609, 26, 5753, 6, 14, 1033, 24, 23, 12, 2, 12, 9, 23, 23, 17, 24, 14, 24, 15, 24, 3299, 8, 22, 6875, 401, 19, 22, 19, 10, 1, 7529