Task: Program Execution
Input (English): Q, 9697, 8431, t, E, 5749, 5719, f, n, 4215, c, v, 9109, F, 7171, s, Z, c, 6283, 7693, N
Output (English): 2, 3, 6, 7, 10, 13, 15, 19, 20