Task: Program Execution
Input (English): 6673 A E 8757 6749 2839 Z I 9079 4315 1809 5309 5279 6749 2677 3025 x K l d 5213 I 4411 3303 E j 9743 D 3523 e v
Output (English): 1, 4, 5, 6, 9, 10, 11, 12, 13, 14, 15, 16, 21, 23, 24, 27, 29