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: ['i', 'l', '7227', 'L', '7843', 'C', '5917', '1645', '1139', 'C', '1285', 'P', 'r', 'h', 'E', 'c', '7081', '7483', 'v', 'N', '7503', '4901', 'V', '2505', 'r', 'T', '3171', 'E', 'j']

9, 12, 7227, 12, 7843, 3, 5917, 1645, 1139, 3, 1285, 16, 18, 8, 5, 3, 7081, 7483, 22, 14, 7503, 4901, 22, 2505, 18, 20, 3171, 5, 10