Task: Program Execution
Input (English): 2301, W, 2817, 1371, y, R, 3961, 7639, 7413, l, S, h, 463, 7597, x, 6495, a, 8669, 2265, D
Output (English): 2, 5, 6, 10, 11, 12, 15, 17, 20