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: ['w', '5667', 'K', 'l', 'Q', 'd', 'Q', 'z', '1019', '6917', '7497', 'c', '9459', '7089', '2761', 'q', 'N', '6967', '269', 'U']

23, 5667, 11, 12, 17, 4, 17, 26, 1019, 6917, 7497, 3, 9459, 7089, 2761, 17, 14, 6967, 269, 21