Task: Program Execution
Input (English): 571, s, V, 6173, o, 2907, 9751, 5513, 3217, Z, 2361, 7043, r, 9753, 615, P
Output (English): 571, 6173, 2907, 9751, 5513, 3217, 2361, 7043, 9753, 615