Which is equivalent to \g(A\rtB)\g (A \rt{B})\g(A\rtB)?
\gA+\ac12\gB\g A + \ac{1}{2}\g B\gA+\ac12\gB
\gA+2\gB\g A + 2\g B\gA+2\gB
\ac12(\gA+\gB)\ac{1}{2}(\g A + \g B)\ac12(\gA+\gB)
\rt\gAB\rt{\g AB}\rt\gAB