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: ['F', '2811', 'w', '5745', 'V', '793', '265', '4859', 'v', 'h', '8889', '8875', 'c']

6, 2811, 23, 5745, 22, 793, 265, 4859, 22, 8, 8889, 8875, 3