$$\begin{array}{ccccc}\hfill \hfill & \hfill \hfill & \hfill \mathrm{\text{symm}}\hfill & \hfill \mathrm{\text{stretch}}\hfill & \hfill \mathrm{\text{symm/stretch}}\hfill \\ \hfill \mathrm{\text{small op}}\hfill & \hfill \int x\hfill & \hfill \int x\hfill & \hfill \int x\hfill & \hfill \int x\hfill \\ \hfill \mathrm{\text{large op}}\hfill & \hfill \int x\hfill & \hfill \int x\hfill & \hfill \int x\hfill & \hfill \int x\hfill \\ \hfill \mathrm{\text{small op}}\hfill & \hfill \int \frac{x}{y}\hfill & \hfill \int \frac{x}{y}\hfill & \hfill \int \frac{x}{y}\hfill & \hfill \int \frac{x}{y}\hfill \\ \hfill \mathrm{\text{large op}}\hfill & \hfill \int \frac{x}{y}\hfill & \hfill \int \frac{x}{y}\hfill & \hfill \int \frac{x}{y}\hfill & \hfill \int \frac{x}{y}\hfill \end{array}$$