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: ['5491', 'x', '3959', '4913', '4775', '2661', 'r', 'T', 'q', '5437', '3997', 'X', '4333', '1815', '5601', 'w', 'L', '4739', '1111', 'g', '6525', 'c', '2109', 'g', '5451', 'C', 'n', '8683', 'v', '6109', '7343', 'X', '3023', 'v', 'v', '9709', '4835', '5463']

5491, 24, 3959, 4913, 4775, 2661, 18, 20, 17, 5437, 3997, 24, 4333, 1815, 5601, 23, 12, 4739, 1111, 7, 6525, 3, 2109, 7, 5451, 3, 14, 8683, 22, 6109, 7343, 24, 3023, 22, 22, 9709, 4835, 5463