Task: Program Execution
Input (English): C, Q, 2521, T, 8821, 9635, 7143, a, r, 8195, B, 1203, 7943, t, 1541, 4917
Output (English): 2521, 8821, 9635, 7143, 8195, 1203, 7943, 1541, 4917