$\{a^m{b}^n{c}^{mn}$:$m0,n0\}.$

$\{a^{n}b{a}^{2n}b{a}^{3n}$:$n0\}.$

$\{a^n{b}^n{a}^n{b}^n$:$n0\}.$

Using the Pumping lemma to prove that the given language is not context free and show all cases.