Task: Program Execution
Input (English): 67 a E 3921 H 2841 7415 1223 2069 135 8321 6671 n 137 8887 2231 5739 2525 5097 E i v q 9251 5277 M 1845 P 3693 G
Output (English): 1, 4, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 24, 25, 27, 29