\begin{matrix}
 & & \text{symm} & \text{stretch} & \text{symm/stretch} \\
\text{small\ op} & {\int x} & {\int x} & \left. \int x \right. & \left. \int x \right. \\
\text{large\ op} & {\int x} & {\int x} & \left. \int x \right. & \left. \int x \right. \\
\text{small\ op} & {\int\frac{x}{y}} & {\int\frac{x}{y}} & \left. \int\frac{x}{y} \right. & \left. \int\frac{x}{y} \right. \\
\text{large\ op} & {\int\frac{x}{y}} & {\int\frac{x}{y}} & \left. \int\frac{x}{y} \right. & \left. \int\frac{x}{y} \right. \\
\end{matrix}
