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', '733', '7783', '1525', 'z', 'N', '9395', 't', '5309', 'e', 'N', '3095', 'u', 'r', '923', '6193', '249', 'q']

10, 733, 7783, 1525, 26, 14, 9395, 20, 5309, 5, 14, 3095, 21, 18, 923, 6193, 249, 17