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: ['J', 'w', '1345', '6127', '8973', '3175', '3663', '9919', 'q', 'b', '3289', '3961', '1025', 'i', '4465', 'e', '7419', '7343', '7339', '3995', '1013', 'I', '3533', 'r', '4675', 'V', '4485', 'U', '9175', 'k', '2163', '7963', 'H', 'U', 'x', '3751', 'b', 'U']

10, 23, 1345, 6127, 8973, 3175, 3663, 9919, 17, 2, 3289, 3961, 1025, 9, 4465, 5, 7419, 7343, 7339, 3995, 1013, 9, 3533, 18, 4675, 22, 4485, 21, 9175, 11, 2163, 7963, 8, 21, 24, 3751, 2, 21