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: ['o', '895', '8053', 'r', '3973', 'Z', '93', 'd', '7671', 's', 'l', '187', 's', 'C', '8813', '2849', 'h', 'x', '1427', 'B', 'W', 'V', '4573', '5383', 'l', 'Y', 'E', 'K', 'd', '1611', '2461', '7449', '5247', '8641', '9991']

15, 895, 8053, 18, 3973, 26, 93, 4, 7671, 19, 12, 187, 19, 3, 8813, 2849, 8, 24, 1427, 2, 23, 22, 4573, 5383, 12, 25, 5, 11, 4, 1611, 2461, 7449, 5247, 8641, 9991