Need to remove elements which repeated 2 times

I have

A=[1 2; 1,3; 1,4; 1,5; 2,3; 3,6; 4,5; 5,6];

element 2, 4, 6 repeated 2 times. I want to remove them from A.

A_new=[1,3; 1,5]

[KSSV]

Where they have repeated? 3 also repeated right?

[Turlough Hughes]

So you want to remove rows if either value in that row has been repeated in another one?

[NA]

Yes, I want to remove rows if either element repeated only twice. 3 repeated three times.

A=[1 2; 1,3; 1,4; 1,5; 2,3; 3,6; 4,5; 5,6];
N=max(max(A));
for i=1:N
    if sum(sum(A==i),2)==2
        A(any(ismember(A,i),2),:)=[];
    end
    
end

This code removes all element in A.

but I want to have A_new=[1,3; 1,5]

[Turlough Hughes]

If you have values repeated in the same row and nowhere else, is that row to be deleted also?

i.e. for this input

A=[1 2; 1,3; 1,4; 1,5; 2,3; 3,6; 4,5; 5,6; 8 8];

is then answer then

A_new = [1 3; 1 5; 8 8]; %or
A_new = [1 3; 1 5];

[NA]

in my case should be A_new = [1 3; 1 5];

Answer 1

[Alex Mcaulley]

A=[1 2; 1,3; 1,4; 1,5; 2,3; 3,6; 4,5; 5,6];
N=max(max(A));
A_new = A;
for i=1:N
    if sum(sum(A==i),2)==2
        A_new(any(ismember(A_new,i),2),:)=[];
    end
end