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: ['j', '4781', 'n', '5535', 'v', 'q', 'g', 'r', 'X', 'g', '7623', '5655', '7739', '5763', '1379', '6191', 'w', '4585', 'O', '8891', '9437', '8681', 'U', '4809', '1341', '6705', '5931', 'T', 'f', 'k']

10, 4781, 14, 5535, 22, 17, 7, 18, 24, 7, 7623, 5655, 7739, 5763, 1379, 6191, 23, 4585, 15, 8891, 9437, 8681, 21, 4809, 1341, 6705, 5931, 20, 6, 11