Task: Program Execution
Input (English): 1337, 2725, 7013, 7855, g, 1269, 995, 7079, 8985, M, j, 5779, j, n, 69, 1551, C, h, 6751, T, Z, X, W
Output (English): 1, 2, 3, 4, 6, 7, 8, 9, 12, 15, 16, 19