Simplify the following BNF grammar using metasymbols:

An example would be:

Original:

--> +

| -

|

--> *

| /

|

Simplified:

--> {(+ | -) }

--> {(* | /)

if stmt if cond then stmt endif | if cond cond cond then then then cond stmt stmt stmt then else stmt endif else-if endif else-if else stmt | if if | endif if elsif elsif cond then stmt else if else stmt if stmt if cond then stmt endif | if cond cond cond then then then cond stmt stmt stmt then else stmt endif else-if endif else-if else stmt | if if | endif if elsif elsif cond then stmt else if else stmt