Task: Program Execution
Input (English): b, 7907, 6631, 5531, Q, 7973, D, l, u, 4357, l, N, M, N, 1385, 7821, 2271, O, 4669, 2385, G
Output (English): b, Q, D, l, u, l, N, M, N, O, G, 7907, 6631, 5531, 7973, 4357, 1385, 7821, 2271, 4669, 2385