Task: Program Execution
Input (English): B, x, 6979, R, Z, 7127, S, 3293, 7959, K, 923, 7577, 6613, 1175, 7851, J, 77, 6693, 5661, R, 9783, M, z
Output (English): 6979, 7127, 3293, 7959, 923, 7577, 6613, 1175, 7851, 77, 6693, 5661, 9783