Task: Program Execution
Input (English): c, u, C, 4361, 6143, 5921, 4803, 6961, 7249, Y, 9851, K, 5047, C, b, 3989, W, 803, 2395, M, Y
Output (English): 4361, 6143, 5921, 4803, 6961, 7249, 9851, 5047, 3989, 803, 2395