How do I write a loop in Matlab

How do I write a (double) loop in Matlab that goes through multiple pairs of interest to compute the ADF or Johansen test to see if they cointegrate.

[Walter Roberson]

https://www.mathworks.com/help/econ/jcitest.html

Maybe something like

rows = size(YourMatrix,1);
for J = 1 : rows
    for K = J+1 : rows
        result(J,K,:) = jcitest(YourMatrix([J K],:));
        result(K,J,:) = result(J,K,:);
    end
end