Task: Program Execution
Input (English): 10, 21, ['9287', 'X', 'N', 'O', '8135', 'x', '8713', '5273', 'W', '2471', 'H', '1657', 'o', '5911', 'w', 's', 'R', 'U', 'f', 'i', 'J', '8869', '2985', '1337']
Output (English): JifURsw5911o1657H2471