how to perform closing by reconstruction followed by opening by reconstruction

In image processing demo(watershed segmentation) following codes were used for opening by reconstruction follwed by closing by reconstruction     Ie = imerode(I, se); Iobr = imreconstruct(Ie, I); figure, imshow(Iobr), title('Opening-by-reconstruction (Iobr)') Iobrd = imdilate(Iobr, se); Iobrcbr = imreconstruct(imcomplement(Iobrd), imcomplement(Iobr)); Iobrcbr = imcomplement(Iobrcbr); figure, imshow(Iobrcbr), title('Opening-closing by reconstruction (Iobrcbr)') For closing by reconstruction followed by opening by reconstruction can i follow the same sequence but interchanging imerode and imdilate positioning in above code ? ;