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: ['E', 'K', '2123', 'p', 'J', 'k', 'o', 'L', '4633', '2341', '4355', '6239', '6751', '4211', 'L', 'L', '7721', '8645', '8143', 'g', 'r', '2931', '1623', 'E', '5171', '9421', 'P', 'y']

5, 11, 2123, 16, 10, 11, 15, 12, 4633, 2341, 4355, 6239, 6751, 4211, 12, 12, 7721, 8645, 8143, 7, 18, 2931, 1623, 5, 5171, 9421, 16, 25