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: ['b', 'h', '2979', '3943', '3527', 'c', 'B', '9799', '6927', '2589', 'V', 'd', 'e', 't', '7113', '2387']

2, 8, 2979, 3943, 3527, 3, 2, 9799, 6927, 2589, 22, 4, 5, 20, 7113, 2387