\begin{matrix}
 & \text{219} & \text{21A} & \text{21B} & \text{21C} & \text{21D} & \text{21E} & \text{21F} \\
\text{0} & \leftarrow & \twoheadrightarrow & \Lsh & \rightharpoonup & \Leftarrow & ⇠ & ⇰ \\
\text{1} & \uparrow & ↡ & \Rsh & \rightharpoondown & \Uparrow & ⇡ & ⇱ \\
\text{2} & \rightarrow & \leftarrowtail & ↲ & \downharpoonright & \Rightarrow & ⇢ & ⇲ \\
\text{3} & \downarrow & \rightarrowtail & ↳ & \downharpoonleft & \Downarrow & ⇣ & ⇳ \\
\text{4} & \leftrightarrow & ↤ & ↴ & \rightleftarrows & \Leftrightarrow & ⇤ & ⇴ \\
\text{5} & \updownarrow & ↥ & ↵ & ⇅ & \Updownarrow & ⇥ & ⇵ \\
\text{6} & \nwarrow & \mapsto & \curvearrowleft & \leftrightarrows & ⇖ & ⇦ & ⇶ \\
\text{7} & \nearrow & ↧ & \curvearrowright & \leftleftarrows & ⇗ & ⇧ & ⇷ \\
\text{8} & \searrow & ↨ & ↸ & \upuparrows & ⇘ & ⇨ & ⇸ \\
\text{9} & \swarrow & \hookleftarrow & ↹ & \rightrightarrows & ⇙ & ⇩ & ⇹ \\
\text{A} & \nleftarrow & \hookrightarrow & \circlearrowleft & \downdownarrows & \Lleftarrow & ⇪ & ⇺ \\
\text{B} & \nrightarrow & \looparrowleft & \circlearrowright & \leftrightharpoons & \Rrightarrow & ⇫ & ⇻ \\
\text{C} & ↜ & \looparrowright & \leftharpoonup & \rightleftharpoons & ⇜ & ⇬ & ⇼ \\
\text{D} & ↝ & \leftrightsquigarrow & \leftharpoondown & \nLeftarrow & \rightsquigarrow & ⇭ & ⇽ \\
\text{E} & \twoheadleftarrow & \nleftrightarrow & \upharpoonright & \nLeftrightarrow & ⇞ & ⇮ & ⇾ \\
\text{F} & ↟ & ↯ & \upharpoonleft & \nRightarrow & ⇟ & ⇯ & ⇿ \\
\end{matrix}
