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: ['f', 'J', '6655', '6205', '3373', '499', '5201', '9479', '2497', 'j', '2471', '9593', '5087', '5925', 'b', 'i', 'i', '27', 'U', 'l', 'E', '7197', '1527', '1319', 'O', 'D', 'Y', 'p', '8885', 'N', '4491', 'x', 'T', 'B', '1717', '5821']

6, 10, 6655, 6205, 3373, 499, 5201, 9479, 2497, 10, 2471, 9593, 5087, 5925, 2, 9, 9, 27, 21, 12, 5, 7197, 1527, 1319, 15, 4, 25, 16, 8885, 14, 4491, 24, 20, 2, 1717, 5821