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: ['k', 'N', '4839', '9125', '2429', 'J', '6885', 'p', '3151', 'd', 'v', '6263', '1959', 'j', '4319']

11, 14, 4839, 9125, 2429, 10, 6885, 16, 3151, 4, 22, 6263, 1959, 10, 4319