Task: Program Execution
Input (English): f, t, s, 4183, 4531, F, d, 6759, V, s, 7515, d, q, 6603, C, 3769, 2653, 4707, n, j, l, 2737, 5435, 3167
Output (English): 4, 5, 8, 11, 14, 16, 17, 18, 22, 23, 24