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: ['H', '2957', 'N', 'a', 'x', 't', '8007', '9255', '7425', '3647', '7773', '8215', 'T', '9931', 'V', '9351', '8989', 'y', 'q', '3221', 'T', '1677', 'B', '4373', 'Y', '4425']

8, 2957, 14, 1, 24, 20, 8007, 9255, 7425, 3647, 7773, 8215, 20, 9931, 22, 9351, 8989, 25, 17, 3221, 20, 1677, 2, 4373, 25, 4425