Detailed Instructions: 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.
Q: ['1557', 'I', 'n', '8931', '5767', 'u', 'L', 'h', 'D', 'D', '9709', 'C', '5641', '7933', 'W', '3643', '5971', '1785']
A:
1557, 9, 14, 8931, 5767, 21, 12, 8, 4, 4, 9709, 3, 5641, 7933, 23, 3643, 5971, 1785