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: ['3007', 'U', 'p', 'C', 'M', '6285', 'B', '3251', 'j', '8387', 'j', 'D', '6561', '2543', 'L', 'Z', 'I', '8763', '2079', '6327', '2519', 'm', '937', 'X', '157', 'j', 'm', '1689', '5567', 'q', 'f', '8117', '9601', '3023', 'z', 'Q', 'W', 'S', '4523', '1745']

3007, 21, 16, 3, 13, 6285, 2, 3251, 10, 8387, 10, 4, 6561, 2543, 12, 26, 9, 8763, 2079, 6327, 2519, 13, 937, 24, 157, 10, 13, 1689, 5567, 17, 6, 8117, 9601, 3023, 26, 17, 23, 19, 4523, 1745