begin{center}
                [
                begin{blockarray}{cccccc}
                {{1}{2}{3}} & {{1,2}{3}} & {{1,3}{2}} & {{1}{2,3}} & {{1,2,3}} \
                begin{block}{(ccccc)c}
                  1 & 1 & 1 & 1 & 1 & {{1}{2}{3}} \
                  0 & 1 & 0 & 0 & 1 & {{1,2}{3}} \
                  0 & 0 & 1 & 0 & 1 & {{1,3}{2}} \
                  0 & 0 & 0 & 1 & 1 & {{1}{2,3}} \
                  0 & 0 & 0 & 0 & 1 & {{1,2,3}} \
                end{block}
                end{blockarray}


]
    end{center}

small[....

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