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: ['5065', '1339', '8065', 'd', '6459', '8585', 'L', 'e', '803', 'b']

5065, 1339, 8065, 4, 6459, 8585, 12, 5, 803, 2