Task: Program Execution
Input (English): [[-115, -158, -7, 20, -68, -46, 42], [79, -136], [-83, 89, 15], [-21, -149, -59, -93, -159], [-63, -114, 60, -91], [-147, -112, 67]]
Output (English): [42, 79, 89, -21, 60, 67]