dr.O.G. kakde, context free grammar and syntax analysis

Question

obtain regular grammar equivalent to the regular expression given below:

1) a*(a|b)bb

2) (ab)*ba(ab)*

Answer 1

1) S ->aS|A

    A->abb|bbb

 

2)S ->AbaB

   A ->aAb|ε

   B ->aBb|ε