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: ['9663', 'v', 'P', 'L', 'O', 't', '4171', '4459', 'W', 'B', '4225', 'q', '5093', 'R', '7101', '6113', '6333', '1783', 's', 'i', '5077', 'D', '4685', '4899', 'x', '7101', '1343', '8425', '1801', '5475', 'n', '9721', 'Q']

9663, 22, 16, 12, 15, 20, 4171, 4459, 23, 2, 4225, 17, 5093, 18, 7101, 6113, 6333, 1783, 19, 9, 5077, 4, 4685, 4899, 24, 7101, 1343, 8425, 1801, 5475, 14, 9721, 17