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: ['3877', 'w', '3855', 's', 'E', '8549', 'c', '9761', '3451', '5045', 'K', '143', '3823', '865', '4219', '9615', 'h', '7091', 'V', 'a', '6205', '4545', '9177', '7233', '715', '2533', '9435', '4659', '8089', 'F', 'i', 'v', '1851', '5003', '905', 'F', 'y', '2777', 'H']

3877, 23, 3855, 19, 5, 8549, 3, 9761, 3451, 5045, 11, 143, 3823, 865, 4219, 9615, 8, 7091, 22, 1, 6205, 4545, 9177, 7233, 715, 2533, 9435, 4659, 8089, 6, 9, 22, 1851, 5003, 905, 6, 25, 2777, 8