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.

['t', '5153', 'I', '5033', 'W', 'D', 'R', '3547', 'p', '269', 'J', 'a', 'O', 'L', '8845', 'E', 'Z', '1983', '3045']
20, 5153, 9, 5033, 23, 4, 18, 3547, 16, 269, 10, 1, 15, 12, 8845, 5, 26, 1983, 3045

['D', '4525', 'O', 'Y', '3927', '5539', '8589', '1733', 'C', '2841', 'f', '8139', 'q', '8847', '1455', 'B', '5705', '231', '6423', 'T', 'F', '5277', 'h', '55']
4, 4525, 15, 25, 3927, 5539, 8589, 1733, 3, 2841, 6, 8139, 17, 8847, 1455, 2, 5705, 231, 6423, 20, 6, 5277, 8, 55

['4053', 'r', '4197', 'K', 'L', '4315', 'H', '1623', 'j', '6889', '9965', '5483', 'S', 'i', 'n', 'w', 'M', '1665', 'r', '6995', '7729', '4627', '9211', 'l', '2139', '9219', '4707', '4823', '4055']

4053, 18, 4197, 11, 12, 4315, 8, 1623, 10, 6889, 9965, 5483, 19, 9, 14, 23, 13, 1665, 18, 6995, 7729, 4627, 9211, 12, 2139, 9219, 4707, 4823, 4055