Task: Program Execution
Input (English): S, O, H, B, x, 4053, H, r, Q, x, 5513, 881, Z, 8655, y, w, 467, 7077, 1133, 6269, e, s, 1613
Output (English): 1, 2, 3, 4, 5, 7, 8, 9, 10, 13, 15, 16, 21, 22