Task: Program Execution
Input (English): l, 6725, 7793, 1301, 4391, 9497, a, Z, 8869, N, p, v, L, n, o, 389, q, a, R, 9693, 2063
Output (English): 1, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19