Q$2)($Total $15$ Points$)$

Describe in English words the definition of the language $(1$ Point each$)$ and give a regular expression for the language accepted by each of the following FAs and TGs $(2$ points each$).$In English:

Regular Expression: $a((a+b)a)**$

d$)$

$(1,2$ Points$)$

Please just write out the english words for c and d$.$