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', 'V', '7047', '481', 't', '115', 'S', 'X', '5583', 'o', 'G', 'f', 'k', 'X', 'A', '5557', 'v', 'v', '1981', '3587', '5677', '5461', 'Z', '6257', '5483', '2145', 'K', 'r', '4069', '1273', '8769', 'z', '3913', '7139', '8357', 'J', '6605']

13, 22, 7047, 481, 20, 115, 19, 24, 5583, 15, 7, 6, 11, 24, 1, 5557, 22, 22, 1981, 3587, 5677, 5461, 26, 6257, 5483, 2145, 11, 18, 4069, 1273, 8769, 26, 3913, 7139, 8357, 10, 6605