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: ['2477', '4289', '477', '9943', 'a', 'S', 'A', 'f', 'W', 'b', '9953', '7511', '8435', 'h']

2477, 4289, 477, 9943, 1, 19, 1, 6, 23, 2, 9953, 7511, 8435, 8