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: ['327', 'S', '577', 'W', 'v', '4623', 'M', '8767', '8947', 'c', 'u', 'z', '3563', 'D', '6911', '693', '1611', 'O', 'a', 'h', 'G', '9627', 'C', '2949', '3835', 'p', '9019', 'P', 'U', 'P']

327, 19, 577, 23, 22, 4623, 13, 8767, 8947, 3, 21, 26, 3563, 4, 6911, 693, 1611, 15, 1, 8, 7, 9627, 3, 2949, 3835, 16, 9019, 16, 21, 16