MATLAB: How to select the combinations without repetitions in a matrix

matrix sorting

Hi Everybody,

I have a question regarding matrix sorting. I have a matrix "A" a 6 by 2 matrix.

A=[

As you can see row 1,3 and 4 have the same answer but inter changed numbers. How do we get matrix "B" without any combination repeats. Thank you

[ii,jj]=unique(sort(A,2),'rows','stable')
B=A(jj,:)

[ii,jj,kk]=unique(a(:,1),'stable');
out1=a(jj,:)
out2=cell2mat(accumarray(kk,1:numel(kk),[],@(x) {a(max(x),:)}));

a = [  29  29  29  29  25  25  29  29  27;
13  13  13  13  14  14  13  13  19];
[ii,ii] = unique(a','rows','first')
out = a(:,sort(ii));