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: ['E', '4267', 'P', '227', '9115', 'h', 'u', 'b', 'e']

5, 4267, 16, 227, 9115, 8, 21, 2, 5