Task: Program Execution
Input (English): u, 9, x, n, F, O, h
Output (English): [['u', '9', 'x', 'n', 'F', 'O'], ['u', '9', 'x', 'n', 'F', 'h'], ['u', '9', 'x', 'n', 'O', 'h'], ['u', '9', 'x', 'F', 'O', 'h'], ['u', '9', 'n', 'F', 'O', 'h'], ['u', 'x', 'n', 'F', 'O', 'h'], ['9', 'x', 'n', 'F', 'O', 'h']]