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: ['C', 'z', 'H', '7081', '8403', '5839', 'F', '9351', 'M', '5847', '8677', '5967', 'v', 'G', '741', 'H', '8225', 'u', '9885', 'h', 'S', '4939', 'Y', 'g', 'R', '379', 'Y', '8527', '6369', 'A', 'm', 'y', '9537', 'O', '9179', '7821']

3, 26, 8, 7081, 8403, 5839, 6, 9351, 13, 5847, 8677, 5967, 22, 7, 741, 8, 8225, 21, 9885, 8, 19, 4939, 25, 7, 18, 379, 25, 8527, 6369, 1, 13, 25, 9537, 15, 9179, 7821