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: ['Y', '8165', 'z', 'Q', '9305', '6291', 'd', '3509', '2353', 'a', 'U', 'E', 'v', '693', 'y', 'r', 'p', 'f', '329', 'q', 'V', 'y', 'H', '3715', 'e']

25, 8165, 26, 17, 9305, 6291, 4, 3509, 2353, 1, 21, 5, 22, 693, 25, 18, 16, 6, 329, 17, 22, 25, 8, 3715, 5