below are the links for do files used in the video drive.google.com/file/d/1IsXCX4qKRKdnUY9qWr4HIQItO0BAWAmJ/view?usp=sharing, drive.google.com/file/d/1Yi_H9pmWreTtKWmOQKnuYTVWdq-LcydO/view?usp=sharing drive.google.com/file/d/1OPiq8OP6rgW37F0YxqYSoqxRR_hyfwkC/view?usp=sharing,%20drive.google.com/file/d/1emgCXfCvzWF4PtP7iUFbU4X-YyS3mR8j/view?usp=sharing,%20drive.google.com/file/d/1i9DNeREu_cxQXWx1D9JqfI7zbAcpZLTU/view?usp=sharing
The links for do files drive.google.com/file/d/1IsXCX4qKRKdnUY9qWr4HIQItO0BAWAmJ/view?usp=sharing, drive.google.com/file/d/1Yi_H9pmWreTtKWmOQKnuYTVWdq-LcydO/view?usp=sharing drive.google.com/file/d/1OPiq8OP6rgW37F0YxqYSoqxRR_hyfwkC/view?usp=sharing,%20drive.google.com/file/d/1emgCXfCvzWF4PtP7iUFbU4X-YyS3mR8j/view?usp=sharing,%20drive.google.com/file/d/1i9DNeREu_cxQXWx1D9JqfI7zbAcpZLTU/view?usp=sharing