Task: Program Execution
Input (English): [[49, -72, -46, 38, -96, 21], [21, -105], [47, -69, 13, -126], [-199, 49, -120, -36, 82, -141, -140], [-55, -74, 10, -34], [-129, -126, -197, -142, 21]]
Output (English): [49, 21, 47, 82, 10, 21]