Task: Program Execution
Input (English): 8477, 7153, 7049, 4349, 9557, O, 7721, 4275, 7205, 3267, 6651, 1329, G, 4163, 4483, 5397, z, 9211, j, 8549, 5189, W, 6665, l
Output (English): 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 23