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: ['u', '8119', 'Y', '3201', 'A', 'C', '9185', 'p', 'y', 'z', 'I', '8595', 'Q', '9341', 'u', '2491', 'K', '5979', '6061', 'o', 'r', '3397', '8343', 'i', '3971', 'o', '4489', 'd', 'W', 'o', '4841', '5541', '9761']

21, 8119, 25, 3201, 1, 3, 9185, 16, 25, 26, 9, 8595, 17, 9341, 21, 2491, 11, 5979, 6061, 15, 18, 3397, 8343, 9, 3971, 15, 4489, 4, 23, 15, 4841, 5541, 9761