Task: Program Execution
Input (English): 6427, G, N, 4591, 1023, 7531, 1123, 4483, 4671, C, l, J, y, e, 7931, 33, f, o, 627
Output (English): 1, 4, 5, 6, 7, 8, 9, 15, 16, 19