Task: Program Execution
Input (English): F, p, 7605, h, 6103, 2619, 9709, 911, 19, 1503, z, 1041, 7211, H, J, 5401, 9503, q, 8225, 1577
Output (English): 3, 5, 6, 7, 8, 9, 10, 12, 13, 16, 17, 19, 20