Task: Program Execution
Input (English): 643, 7609, R, 379, 5281, M, V, b, m, y, J, E, 9765, R, t, l, Z, 5989, 5541, 1579, u
Output (English): 643, 7609, 379, 5281, 9765, 5989, 5541, 1579