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: ['m', 'g', '2429', '3171', '5743', 'y', '8219', '6749', 'v', 'L', 'N', '1', 'a', 'C', 'F', 'D', 'J', '3505', '7417', '4085', 'a', 'x', 'j', 'r']

13, 7, 2429, 3171, 5743, 25, 8219, 6749, 22, 12, 14, 1, 1, 3, 6, 4, 10, 3505, 7417, 4085, 1, 24, 10, 18