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: ['3051', 'S', 'N', 'h', 'y', 'S', 'W', 'N', '2771', '9227', 'W', 'n', '7319', 'W', '5511', 'L', 'p', 'u', 'v', 'Z', '7623', 'Q', '6473', 'o', '6953', '4577', '6033', 'S', '547', 's', '7777', '2547', 'd', '9299', '8751', 'D', '9829', 'B', 'E', '5401']

3051, 19, 14, 8, 25, 19, 23, 14, 2771, 9227, 23, 14, 7319, 23, 5511, 12, 16, 21, 22, 26, 7623, 17, 6473, 15, 6953, 4577, 6033, 19, 547, 19, 7777, 2547, 4, 9299, 8751, 4, 9829, 2, 5, 5401