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: ['M', '4771', 'w', '8185', 'R', 'o', 'r', '4067', 'g', 'S', '3479']

13, 4771, 23, 8185, 18, 15, 18, 4067, 7, 19, 3479