Task: Program Execution
Input (English): 1, 9, 4, Q, z, 0, t
Output (English): [['1', '9', '4', 'Q', 'z', '0'], ['1', '9', '4', 'Q', 'z', 't'], ['1', '9', '4', 'Q', '0', 't'], ['1', '9', '4', 'z', '0', 't'], ['1', '9', 'Q', 'z', '0', 't'], ['1', '4', 'Q', 'z', '0', 't'], ['9', '4', 'Q', 'z', '0', 't']]