\begin{array}{lllllllllllllllll}
 & \text{230} & \text{231} & \text{232} & \text{233} & \text{234} & \text{235} & \text{236} & \text{237} & \text{238} & \text{239} & \text{23A} & \text{23B} & \text{23C} & \text{23D} & \text{23E} & \text{23F} \\
\text{0} & & & & & & & & & & & & & & & & @ \\
\text{1} & & & & & & & & & & & & & & & & @ \\
\text{2} & & & \frown & & & & & & & & & & & & & @ \\
\text{3} & & & \smile & & & & & & & & & & & & & @ \\
\text{4} & & & & & & & & & & & & {} & & & & @ \\
\text{5} & & & & & & & & & & & & {} & & & & @ \\
\text{6} & & & & & & & & & & & & & & & & @ \\
\text{7} & & & & & & & & & & & & & & & & @ \\
\text{8} & \lceil & & & & & & & & & & & & & & & @ \\
\text{9} & \rceil & & \langle & & & & & & & & & & & & @ & @ \\
\text{A} & \lfloor & & \rangle & & & & & & & & & & & & @ & @ \\
\text{B} & \rfloor & & & & & & & & & & & & & & @ & @ \\
\text{C} & & & & & & & & & & & & & & & @ & @ \\
\text{D} & & & & & & & & & & & & & & & @ & @ \\
\text{E} & & & & & & & & & & & & & & \overbrace{} & @ & @ \\
\text{F} & & & & & & & & & & & & & & \underbrace{} & @ & @ \\
\end{array}
