Exercise $7\mathrm{.}1\mathrm{.}4$ : Repeat Exercise $7\mathrm{.}1\mathrm{.}2$ for the following grammar:

$S$AAA$|B$

$AaA|B$

$Blon$

a$)$ Eliminate $lon-$productions.

b$)$ Eliminate any unit productions in the resulting grammar.

c$)$ Eliminate any useless symbols in the resulting grammar.

d$)$ Put the resulting grammar into Chomsky Normal Form.

Can you solve it on paper properly? Thanks.