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: ['j', 'r', '8239', '2153', 'C', 'I', '3087', '541', '1299', '5401', '8873', '8569', '6325', 'A', 'v', '1095', '6739', 'w', '5721', '171', '8225', '2719', 'U']
A:
10, 18, 8239, 2153, 3, 9, 3087, 541, 1299, 5401, 8873, 8569, 6325, 1, 22, 1095, 6739, 23, 5721, 171, 8225, 2719, 21