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.

['6913', '1029', 'v', 'k', '5873', 'B', 'c', '1779', '5413', 'D']
6913, 1029, 22, 11, 5873, 2, 3, 1779, 5413, 4

['4359', '6545', '7337', '5589', '9335', '3087', '7249', '9569', '2873', 'F', 'X', '9669', '3769', '2115', '8541', '4823', 'I', 'c', '9547']
4359, 6545, 7337, 5589, 9335, 3087, 7249, 9569, 2873, 6, 24, 9669, 3769, 2115, 8541, 4823, 9, 3, 9547

['4081', '4315', '6635', 'J', '3769', 'C', 'p', '1489', '6283', 'k', 'v', '5627', '5387', 'D', '8551', '6357', '5203', '8921', 'j', 'c', 'H', '9991', '7221', '6041', 'z', '8213', '5359', 'u']
4081, 4315, 6635, 10, 3769, 3, 16, 1489, 6283, 11, 22, 5627, 5387, 4, 8551, 6357, 5203, 8921, 10, 3, 8, 9991, 7221, 6041, 26, 8213, 5359, 21