Task: Program Execution
Input (English): z, 8383, Q, 5419, 2375, 3217, X, A, 6249, x, 7107, u, J, 8519, 4775, V, 5539, h, O, k, 3781, c
Output (English): 2, 4, 5, 6, 9, 11, 14, 15, 17, 21