Task: Program Execution
Input (English): 1923, v, B, k, C, e, 8837, 1669, X, 9841, 9349, 6177, 3653, M, 9913, 5775
Output (English): 1923, 8837, 1669, 9841, 9349, 6177, 3653, 9913, 5775