Task: Program Execution
Input (English): x, 4711, 3421, 499, j, 5755, d, 567, 9975, E, 483, 1543, 8647, 9165, 767, G, O, V
Output (English): 2, 3, 4, 6, 8, 9, 11, 12, 13, 14, 15