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: ['4175', 'm', 'Q', 'u', '4507', 'F', 'q', 'H', '5245', '9217', 'C', 'S', 'x', 'J', '7433', '4771', '1845', '5591', 'B', '1005', 'F', 'c', 'K']

4175, 13, 17, 21, 4507, 6, 17, 8, 5245, 9217, 3, 19, 24, 10, 7433, 4771, 1845, 5591, 2, 1005, 6, 3, 11