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: ['5463', 'g', 'H', 'M', '5425', 'Q', 'g', '79', 'd', '4527', 'H', 'h']

5463, 7, 8, 13, 5425, 17, 7, 79, 4, 4527, 8, 8