Task: Program Execution
Input (English): 9815 6427 659 7021 4147 8715 C Z 3481 8265 325 8765 927 9671 K 3647 2143 3617 I s o f 8039 1459 1223 8043 9219 1627
Output (English): 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 14, 16, 17, 18, 23, 24, 25, 26, 27, 28