Task: Program Execution
Input (English): U, 9509, k, 2851, 5955, 8679, 249, b, 3233, 9253, 3147, g, 3903, 1703, W, e, n, N, s
Output (English): 2, 4, 5, 6, 7, 9, 10, 11, 13, 14