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: ['F', '5611', 'O', '7005', '9861', 'b', 'J', 'g', 'V', 'y', '8283', 'q', 'k', '7447']

6, 5611, 15, 7005, 9861, 2, 10, 7, 22, 25, 8283, 17, 11, 7447