\left\(\frac{c}{d}\right\)^3_4
b \quad (b) (\frac{c}{d}) \quad \left(b\right) \left(\frac{c}{d}\right) \quad \bigl(b\bigr) \bigl(\frac{c}{d}\bigr) \quad b
b \quad \Bigl(b\Bigr) \Bigl(\frac{c}{d}\Bigr) \quad \biggl(b\biggr) \biggl(\frac{c}{d}\biggr) \quad b
b \quad \Biggl(b\Biggr) \Biggl(\frac{c}{d}\Biggr) \quad b
b \quad (b)^3_4 (\frac{c}{d})^3_4 \quad \Biggl(b\Biggr)^3_4 \Biggl(\frac{c}{d}\Biggr)^3_4 \quad b
( ) [ ] \lbrace \rbrace \lvert \rvert \lVert \rVert \langle \rangle \lceil \rceil \lfloor \rfloor \lgroup \rgroup \lmoustache \rmoustache
\vert \Vert / \backslash \arrowvert \Arrowvert \bracevert
\uparrow\Uparrow\downarrow\Downarrow\updownarrow\Updownarrow