S -> SS | (S) | a Step 1: S -> SS | (ST | a T -> ) Step 2: S -> (STR | aR | a R -> (STR | aR | a T -> )(Edited: 2020-03-25)
S -> SS | (S) | a
S -> SS | (SP | a P -> )
S -> SS S -> aC C -> a | aS
S -> aC | (SP | a C -> a | aS P -> )
Step 1 : S -> SS | (SB | a
B-> )
C -> S | aS | (SBCSFinal : S -> aC | (SB | a
C -> a | aS | (SBCS B -> )