Task: Program Execution
Input (English): a, 8681, H, B, t, p, 5493, 9833, 9591, z, 3035, m, 1793, 7583, 2199, K, 9265, 1599, M, R, 5897
Output (English): 2, 7, 8, 9, 11, 13, 14, 15, 17, 18, 21