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: ['r', '3659', 'n', '4847', 'z', '367', '3871', 'c', '3925', 'Y', '5141', 'T', 'd', 'b', '5995', '5341', 'p', '5081', 't', 's', '8467', 'q', '3987', '3771', 'T', 'E', '2585', '3497', 'b', 'l', '6141', 'v', 'v', '8039', 'p', 'G']

18, 3659, 14, 4847, 26, 367, 3871, 3, 3925, 25, 5141, 20, 4, 2, 5995, 5341, 16, 5081, 20, 19, 8467, 17, 3987, 3771, 20, 5, 2585, 3497, 2, 12, 6141, 22, 22, 8039, 16, 7