Task: Program Execution
Input (English): Z, 4341, Z, 4701, H, S, 3993, f, 6453, 2335, l, u, T, o, E, C, 3611, e, 2497, g, 19
Output (English): 1, 3, 5, 6, 8, 11, 12, 13, 14, 15, 16, 18, 20