$\Psi\cup\vee\cup$ 
 $\pi<U\ ^{fghjohg\left(\right)\&5\left(=9\cdot\&;\left(\left(\left(\left(\cdot\cdot\cdot\&\left(\left(\left(\left(\left(\left(\frac{\frac{\left(\left(\frac{\left(\left(\left(\left(\left(\left(\left(\left(\left(\left(\right)\right)\right)\right)\right)\right)\right)\right)\right)\right)}{ }\right)\right)}{ }}{ }\right)\right)\right)\right)\right)\right)\right)\right)\right)\right)\right)}$  


(a)