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: ['P', '2083', 'h', '9447', '2143', 'q', '149', 'Z', 'r', 'F', 'z', 'L', 'z', '5849', '1117', '4763', 'u', '6411', '7281', '363', 'G', '8837', 'b', 'Q', '151', '4373', '2663', 'T', '77', 'y', 'k']

16, 2083, 8, 9447, 2143, 17, 149, 26, 18, 6, 26, 12, 26, 5849, 1117, 4763, 21, 6411, 7281, 363, 7, 8837, 2, 17, 151, 4373, 2663, 20, 77, 25, 11