Task: Program Execution
Input (English): 6639, 7157, R, 4651, 3045, I, P, R, 869, 3621, 1409, 9523, q, 1477, V, I, L, u, 3655, 4041, 491, f
Output (English): R, I, P, R, q, V, I, L, u, f, 6639, 7157, 4651, 3045, 869, 3621, 1409, 9523, 1477, 3655, 4041, 491