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.

['647', 'h', '6029', 'r', '7851', 'g', 'u', '9383', '4033', 'i', 'N', '3515', '9369', 'h', '8997', 'H', 'Y', 'k', '1505', 'L', 'F', '3311', '3475', 'a', '6047', '8745', '9905', '6131', '3893', '9329', 'f', '9549', '2777', '2191', '369', '3691', '489', 't', '8239', 'm']
647, 8, 6029, 18, 7851, 7, 21, 9383, 4033, 9, 14, 3515, 9369, 8, 8997, 8, 25, 11, 1505, 12, 6, 3311, 3475, 1, 6047, 8745, 9905, 6131, 3893, 9329, 6, 9549, 2777, 2191, 369, 3691, 489, 20, 8239, 13

['q', '5203', 'L']
17, 5203, 12

['F', 'L', '831', '9817', '4185', '4721', 'D', '4839', 'W', '8707', '9871', 'r', 'H', '4007', '6675', 'd', 'z', '7435', 'n', '5155', '2737', '4089', 'd', 'w', 'Y', 'k', 'd', 'u', 'L', '5705', '817']

6, 12, 831, 9817, 4185, 4721, 4, 4839, 23, 8707, 9871, 18, 8, 4007, 6675, 4, 26, 7435, 14, 5155, 2737, 4089, 4, 23, 25, 11, 4, 21, 12, 5705, 817

