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: ['p', '7645', '9533', '6185', 'R', 'z', 'k', '8765', 'g', '7895', 'c', '9313', 'F', '4753', '7191', '4409', 'L', 'v', '7491', '9593', 'o', 'O', 'C', 'w', '7491', '7367', '6485', 'j', '3693', 'p', '8759', '1205', 'S', '7047']

16, 7645, 9533, 6185, 18, 26, 11, 8765, 7, 7895, 3, 9313, 6, 4753, 7191, 4409, 12, 22, 7491, 9593, 15, 15, 3, 23, 7491, 7367, 6485, 10, 3693, 16, 8759, 1205, 19, 7047