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: ['1835', '1849', 'G', '1647', 'e', '3343', 'B', 'x', 'x', '5647', 'P', 'o', 'q', 'C', '9619', 'L', '8659']

1835, 1849, 7, 1647, 5, 3343, 2, 24, 24, 5647, 16, 15, 17, 3, 9619, 12, 8659