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: ['E', '4417', '1485', '867', 'B', '2917', 'E', '2485', 'E', 'R', '8967', '6609', '9439', 'k', '7241', '6311', 'Z', 'k', '2113', 'L', '5039', 'K', '7597', '721', '3011', '9607', '3379', 'U', '7101', 'z', 'q', '6999', '9081', '8641', 'E', 'A', 'D', 's', 'K', '4121']

5, 4417, 1485, 867, 2, 2917, 5, 2485, 5, 18, 8967, 6609, 9439, 11, 7241, 6311, 26, 11, 2113, 12, 5039, 11, 7597, 721, 3011, 9607, 3379, 21, 7101, 26, 17, 6999, 9081, 8641, 5, 1, 4, 19, 11, 4121