You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

['8129', 'a', '4245', '2391', 'Y', '7569']
Solution: 8129, 1, 4245, 2391, 25, 7569
Why? Here, the alphabets in the list are 'a' and 'Y', hence we replace them by their positions in the English alphabet '1' and '25', respectively in the input list to get '8129, 1, 4245, 2391, 25, 7569'.

New input: ['1123', 'k', 'C', 'd', '2241', '7071', '4293', 'R', '3105', '5259']
Solution:
1123, 11, 3, 4, 2241, 7071, 4293, 18, 3105, 5259