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: ['5715', 'k', 'v', 'k', '633', '3497', '413']

5715, 11, 22, 11, 633, 3497, 413