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: ['4463', 'Y', 'q', 'a', '2165', '3547', 'u', 'x', '981', 'u', 'E', 'Z', 'p', '5997', '1525', 'G', '5673', 'g', 'u', '497', '2459', 'e', '1991', '455', '3607', '5841', 'p', '6919', '487', 'g', 'd', 'B', '7683', 'B', '3011']

4463, 25, 17, 1, 2165, 3547, 21, 24, 981, 21, 5, 26, 16, 5997, 1525, 7, 5673, 7, 21, 497, 2459, 5, 1991, 455, 3607, 5841, 16, 6919, 487, 7, 4, 2, 7683, 2, 3011