\begin{array}{ll}
\text{single\ integral} & {{\int x}{\int M}\left. \int\frac{x}{o} \right.\left. \int\frac{A}{o} \right.\left. \int\frac{x}{A} \right.\left. \int\frac{A}{M} \right.\left. \int\frac{.}{''} \right.} \\
\text{double\ integral} & {\left. \int\left. \int x \right. \right.\left. \int\left. \int M \right. \right.\left. \int\left. \int\frac{x}{o} \right. \right.\left. \int\left. \int\frac{A}{o} \right. \right.\left. \int\left. \int\frac{x}{A} \right. \right.\left. \int\left. \int\frac{A}{M} \right. \right.\left. \int\left. \int\frac{.}{''} \right. \right.} \\
\text{double\ nested\ integral} & {\left. \int\left. \int x \right. \right.\left. \int\left. \int M \right. \right.\left. \int\left. \int\frac{x}{o} \right. \right.\left. \int\left. \int\frac{A}{o} \right. \right.\left. \int\left. \int\frac{x}{A} \right. \right.\left. \int\left. \int\frac{A}{M} \right. \right.\left. \int\left. \int\frac{.}{''} \right. \right.} \\
\end{array}
