Task: Program Execution
Input (English): k 7423 L j 253 Z 6435 4399 M g 8847 4009 933 J M J r 4003 G 1983 U 8331 8261 l 245 2921
Output (English): 2, 5, 7, 8, 11, 12, 13, 18, 20, 22, 23, 25, 26