020D0_Combining_Diacritical_Marks_for_Symbols.tex

\begin{array}{cccc}
 & \mathrm{20D} & \mathrm{20E} & \mathrm{20F} \\
\mathrm{0} & \operatorname{} & \operatorname{} & \operatorname{{}} \\
\mathrm{1} & \operatorname{} & \operatorname{\overleftrightarrow{}\ } & @ \\
\mathrm{2} & \operatorname{{}} & \operatorname{} & @ \\
\mathrm{3} & \operatorname{{}} & \operatorname{} & @ \\
\mathrm{4} & \operatorname{{}} & \operatorname{{}} & @ \\
\mathrm{5} & \operatorname{} & \operatorname{{}} & @ \\
\mathrm{6} & \operatorname{\overleftarrow{}\ } & \operatorname{{}} & @ \\
\mathrm{7} & \operatorname{\vec{}\ } & \operatorname{{}} & @ \\
\mathrm{8} & \operatorname{{}} & \operatorname{{}} & @ \\
\mathrm{9} & \operatorname{{}} & \operatorname{{}} & @ \\
\mathrm{A} & \operatorname{{}} & \operatorname{{}} & @ \\
\mathrm{B} & \dddot{}  & \operatorname{{}} & @ \\
\mathrm{C} & \ddddot{}  & \operatorname{{}} & @ \\
\mathrm{D} & \operatorname{{}} & \operatorname{{}} & @ \\
\mathrm{E} & \operatorname{{}} & \operatorname{\underleftarrow{}\ } & @ \\
\mathrm{F} & \operatorname{{}} & \operatorname{\underrightarrow{}\ } & @ \\
\end{array}