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: ['6997', 'Y', 'b', '9753', 'Q', '3805', 'V', 'k', '327', '2385', '4151', 'c', 'Z', 'k', 'j', '6059', '7811', '7531', '789', 'a', 'H', 'G', 'H', '4751', 'D', '5511', '6079', '8215', 'k', '6923', '6679', '4057', '791', '2279', 'W']

6997, 25, 2, 9753, 17, 3805, 22, 11, 327, 2385, 4151, 3, 26, 11, 10, 6059, 7811, 7531, 789, 1, 8, 7, 8, 4751, 4, 5511, 6079, 8215, 11, 6923, 6679, 4057, 791, 2279, 23