Task: Program Execution
Input (English): 2, 4, ['R', '1329', 'b', 'L', 'e', 'H', 'Y', 'T', '4011', '407', '7733', 'Y', '1523', 'H', '3585', 'b', 'v', '8957', 'U', 'p', 'B']
Output (English): L, b, 1329