Task: Program Execution
Input (English): U, 325, 37, M, W, 3021, 8197, i, 8407, Q, 7419, 6917, 7209, 8037, b, u, E, U, 3243, 1463, s
Output (English): 1, 4, 5, 8, 10, 15, 16, 17, 18, 21