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.

['J', '6243', 'G', 'V', 'K', '6277', 'c', '9637', 'B', 'i', 'U', '3459', 'L']
10, 6243, 7, 22, 11, 6277, 3, 9637, 2, 9, 21, 3459, 12

['3927', 'I', '3053', '299', '4283', '2471', 'V', 't', 'i', 'v', '4623', 'X', 'e', 'S', 'u', 'v', '2201']
3927, 9, 3053, 299, 4283, 2471, 22, 20, 9, 22, 4623, 24, 5, 19, 21, 22, 2201

['1819', 'g', 'X', '6751', '5381', 'q', 'K', '9047', '1647', '7867', '2467', '7971', '425', '5267', '111', '5865', 'z']

1819, 7, 24, 6751, 5381, 17, 11, 9047, 1647, 7867, 2467, 7971, 425, 5267, 111, 5865, 26