Task: Program Execution
Input (English): 539, e, l, 4273, T, 3655, E, 9061, q, U, m, 4165, 3863, z, 5867, 8609, 5093, 7607, 3831, P, b, 8237
Output (English): 2, 3, 5, 7, 9, 10, 11, 14, 20, 21