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: ['8149', 'k', '9959', '589', 'U', '6943', '8061', '1409', 'W', '4361', 'd', 'w', '33', 'q', 'D', 'g', '6545', '4875', 'N', 'M', 'y', '1043', 'i', '5981', 'F', '1257', '303', '7741', '8277']

8149, 11, 9959, 589, 21, 6943, 8061, 1409, 23, 4361, 4, 23, 33, 17, 4, 7, 6545, 4875, 14, 13, 25, 1043, 9, 5981, 6, 1257, 303, 7741, 8277