Given the grammar G $=($V$,\backslash$Sigma $,$ R$,$ S$)$ with V $=\{$S$,$ X$,$ Y$\}$ and $\backslash$Sigma $=\{$a$,$ b$\}.$

Step $3$ of the Chomsky normal form transformation is to eliminate all unit rules.

Perform Step $3.$

If applicable, give intermediate stages.

The rules of R are as follows:

S $->$ X $|$ Y

X $->$ aa $|$ ba $|$ Y

Y $->$ ba $|$ bbY

If you need the special symbols in your solution, you can copy them from here: $\backslash$epsi $->$