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: ['2763', 'x', '5943', 'T', '2061', '8561', '5547', 'j', 'G', 'k', 'v', 'b', 'd', '3057']

2763, 24, 5943, 20, 2061, 8561, 5547, 10, 7, 11, 22, 2, 4, 3057