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', '6947', '8461', 'r', 'G', 'C', 'd', 'd', '4901', 't', '9493', 'x', '5547', 'c', 'l', 'u', 'w', '6811', 'A', '8841', 'z', 'g', 'A', '2585', '4277', '8649', '5881', '4763', '7883']

6, 6947, 8461, 18, 7, 3, 4, 4, 4901, 20, 9493, 24, 5547, 3, 12, 21, 23, 6811, 1, 8841, 26, 7, 1, 2585, 4277, 8649, 5881, 4763, 7883