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: ['3163', '6893', 'd', '147', '8697', 'p', '8201', '279', 'r', 'M', 'g', 'l']

3163, 6893, 4, 147, 8697, 16, 8201, 279, 18, 13, 7, 12