Task: Program Execution
Input (English): y, 6031, 6699, h, f, G, 637, S, 4859, H, 9141, L, 9339, 2881, v, Y, 6387, 4883, J, 5687
Output (English): 1, 4, 5, 6, 8, 10, 12, 15, 16, 19