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: ['N', '8209', 'D', 'k', 'G', 'a', '937', '7621', '7127', 'l', '4947', 'X', '2445', '9911', 'q', 'e', 'I', '587', 'U', '2585', 'g', '8637', '7123', 'S', 'C', '4985', '4663', 'F', '5493', 'p', '3747', '95', '581', '2917', '2163', '1091', '3597', '6255', 'L']

14, 8209, 4, 11, 7, 1, 937, 7621, 7127, 12, 4947, 24, 2445, 9911, 17, 5, 9, 587, 21, 2585, 7, 8637, 7123, 19, 3, 4985, 4663, 6, 5493, 16, 3747, 95, 581, 2917, 2163, 1091, 3597, 6255, 12