Task: Program Execution
Input (English): 1, 4, ['5609', 'm', 'q', 'B', '2121', '2163', 'x', 'b', 'M', 'k', 'r', '7025', 't', '3511', 'r', 'u', '1615', '6793', '6033', '679']
Output (English): 5609, 2121, M, t, 1615