Question $3$

Let $L=\{\begin{array}{c}\text{u}\text{c}\text{v}\end{array}$ : where uin$\{a,b{\}}^{+}$and vin$\{a,b{\}}^{+}$and $\{$:$|u|=|v|\}$ where $=\{a,b,c{\}}^{**}$ is

the alphabet for $L.$

a$.$ Find a context$-$free grammar for L$.$

b$.$ Use your grammar to give a leftmost derivation of $w=$ abacaab

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