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: ['Z', '1231', 'w', '4835', '6735', 'e', '9467', '4547', 'y', 'W', 'e', '4321', 'o', '9845']

26, 1231, 23, 4835, 6735, 5, 9467, 4547, 25, 23, 5, 4321, 15, 9845