texmath-0.6.7: tests/writers/msqrt-03.tex
\sqrt{\begin{array}{cccccc}
\phantom{{A}} & \phantom{{A}} & \phantom{{A}} & \phantom{{A}} & \phantom{{A}} & \phantom{{A}} \\
\phantom{{A}} & \phantom{{A}} & \phantom{{A}} & \phantom{{A}} & \phantom{{A}} & \phantom{{A}} \\
\end{array}}