TASK 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.
PROBLEM: ['K', 'U', '2319', '3941', '183', '5351', 'F', '6081', 'Z', 'G', 'j', 'c', '8693', 'A', 'M', '5089', 'v', '8601', '1517', '7821', 'u', 'N', 'B', 'D', '2145', '8555', '1563', '4059', 'E']

SOLUTION: 11, 21, 2319, 3941, 183, 5351, 6, 6081, 26, 7, 10, 3, 8693, 1, 13, 5089, 22, 8601, 1517, 7821, 21, 14, 2, 4, 2145, 8555, 1563, 4059, 5

PROBLEM: ['D', '8201', 'o', 'O', 'a', 'a', '2475', 'k', '3099', '9789', 'f', 'i', 'k', 'H', 'f', 'Q', 'L', 'D', '3857', '645', 'g']

SOLUTION: 4, 8201, 15, 15, 1, 1, 2475, 11, 3099, 9789, 6, 9, 11, 8, 6, 17, 12, 4, 3857, 645, 7

PROBLEM: ['U', 'B', 'i', 'e', 'k', 'g', '3059', 'H', 'b', '6845', '7987', '7387', '1379', 'j', '1081', 'Q', 'B']

SOLUTION:
21, 2, 9, 5, 11, 7, 3059, 8, 2, 6845, 7987, 7387, 1379, 10, 1081, 17, 2