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: ['G', 'j', '669', 'B', 'z', 'N', 'z', '7507', '1363', 'q', '9449', '9917', '6629', 'v', 'C', 'I', 'y', 'I', '6919', 'v', '2189', '741']

7, 10, 669, 2, 26, 14, 26, 7507, 1363, 17, 9449, 9917, 6629, 22, 3, 9, 25, 9, 6919, 22, 2189, 741