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: ['k', '2573', '4769', 'J', 'c', 'Y', '6781', 'L', '1319', '8509', '5903', 'J', '4995', '4297', '8323', '3275', 'h', 'h', '3511', '2585', 'Z', 'c', 'Y', 'i', '603', 'V', '9503', 'S', '8781', 'd', 'R', 'f', 'd', 'A', '2753', 'O', '8583', '6179', 'l']

11, 2573, 4769, 10, 3, 25, 6781, 12, 1319, 8509, 5903, 10, 4995, 4297, 8323, 3275, 8, 8, 3511, 2585, 26, 3, 25, 9, 603, 22, 9503, 19, 8781, 4, 18, 6, 4, 1, 2753, 15, 8583, 6179, 12