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: ['Q', 'R', '6873', 'G', 'c', 'S', '7133', 'K', '8785', 'd', '4331', 'v', 'J', '5605', '2185', '5889', '8195', '4839', '6251', '5247', 'R', '1045', '3001', 'I', 'D', '3381', 'j', 'A', '4447', '8475', 'K', '4707', '5613', 'F']

17, 18, 6873, 7, 3, 19, 7133, 11, 8785, 4, 4331, 22, 10, 5605, 2185, 5889, 8195, 4839, 6251, 5247, 18, 1045, 3001, 9, 4, 3381, 10, 1, 4447, 8475, 11, 4707, 5613, 6