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: ['b', 'a', 'v', 'W', 'R', '2221', 'N', '9463', 'Z', 'd', 'u', '9345']

SOLUTION: 2, 1, 22, 23, 18, 2221, 14, 9463, 26, 4, 21, 9345

PROBLEM: ['1351', 'w', 'U', 'x', 'c', '3935', 'X', 'K', 'D', '8795', '4387', '8133', 'i', '6151', '7309', '5949', 'X', 'i', 'p', 'B', '3815', '5929', 'H', '6693', 'r', '3727', 'm', 'E', '6575', '1377', 'k', 'p']

SOLUTION: 1351, 23, 21, 24, 3, 3935, 24, 11, 4, 8795, 4387, 8133, 9, 6151, 7309, 5949, 24, 9, 16, 2, 3815, 5929, 8, 6693, 18, 3727, 13, 5, 6575, 1377, 11, 16

PROBLEM: ['2495', 'd', 'D', 'u', 'o', '5173', '6503', '5191', '955', '563', 'E', 'x', '6951', '8585', 'a', '761', '8179', 'y', 'p', 'x']

SOLUTION:
2495, 4, 4, 21, 15, 5173, 6503, 5191, 955, 563, 5, 24, 6951, 8585, 1, 761, 8179, 25, 16, 24