Task: Program Execution
Input (English): 7675, x, I, y, d, D, 5121, r, 4789, 5543, 167, J, c, 1343, W, 5311, 733, I, 1049, 741, b
Output (English): 1, 7, 9, 10, 11, 14, 16, 17, 19, 20