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: ['8911', '875', 'Q', 'X', 'y', '727', 'd', '8999', '393', '3649', '71', 'Y', '9533', 'A', '3223', 'b', 'z', 'u', 'h', 'M', '5843', '4717', '6231', '1283', '3457', 'G', 'G', 'g']

8911, 875, 17, 24, 25, 727, 4, 8999, 393, 3649, 71, 25, 9533, 1, 3223, 2, 26, 21, 8, 13, 5843, 4717, 6231, 1283, 3457, 7, 7, 7