Task: Program Execution
Input (English): 645, K, 5223, h, 6727, A, c, 4255, 681, F, M, b, 8715, r, 3809, 7825, j, P, 1297
Output (English): 645, 5223, 6727, 4255, 681, 8715, 3809, 7825, 1297