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.

Example Input: ['7501', 'c', 'n', '3551', 'U', '8239', 'L', '3149', '9399', 'a', '2763', '2461', 'p']
Example Output: 7501, 3, 14, 3551, 21, 8239, 12, 3149, 9399, 1, 2763, 2461, 16

Example Input: ['4867', 'Y', 't', '8365', 'f', '9409', 'H', '1913', 'J', 'F', 'w']
Example Output: 4867, 25, 20, 8365, 6, 9409, 8, 1913, 10, 6, 23

Example Input: ['l', '2871', 'v', 'l', 'o', '9803', 'a', 'p', 'u', 'b', 'R', '4747', 'B', 's', 'R', 'B', '469', '459', 'i', 'H', 'z', '2561', 't', '3271', '1089', 'T', '8605', '4499', 'N', 'b', '2129', '4323', 'R', 'S', 'j', 'u', 'U', '7083', 'y', '7749']
Example Output:
12, 2871, 22, 12, 15, 9803, 1, 16, 21, 2, 18, 4747, 2, 19, 18, 2, 469, 459, 9, 8, 26, 2561, 20, 3271, 1089, 20, 8605, 4499, 14, 2, 2129, 4323, 18, 19, 10, 21, 21, 7083, 25, 7749