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', '9977', '2809', '7311', '5693', '1327', 'r', '203', 'f', '2991', '771', '4063', 'b', '2281', '355', 'P', 'D', 'E', '7445', 'E', 'w', '661', '1561', '859', '7921', '2597', '6389', '5363', '2801', 'Q', 'g', 'd', 'Z', '4329', '8885', 't']

8, 9977, 2809, 7311, 5693, 1327, 18, 203, 6, 2991, 771, 4063, 2, 2281, 355, 16, 4, 5, 7445, 5, 23, 661, 1561, 859, 7921, 2597, 6389, 5363, 2801, 17, 7, 4, 26, 4329, 8885, 20