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: ['2621', 'x', 'r', 'a', 'p', 'p', '9465', '5663', '2351', 'h', 'T', '6693', 'p', 'J', 'W', 'k', 'r', '9533', 'x', '3071', 'Q', '7897', '4343', '317', '5389', 'm', 's', 't', 'X', '8103', 'Y', 'h', 'M', '1753', '6665', 'Q', 'D', '6963', '8185']

2621, 24, 18, 1, 16, 16, 9465, 5663, 2351, 8, 20, 6693, 16, 10, 23, 11, 18, 9533, 24, 3071, 17, 7897, 4343, 317, 5389, 13, 19, 20, 24, 8103, 25, 8, 13, 1753, 6665, 17, 4, 6963, 8185