Important : This is a sample, and please, I want to solve the all part of question in the same way that doing in image

Now this CFG question I want the answers in a same way on the image above

part 1: ODD-EVEN?

part 2: EVEN-ODD ?

part 3: ODD-ODD?

end of question

Important : a sample image is above so please, I want to solve the all part of question in the same way that doing in image

Thanks

Example of Even-Even Let the terminals be a and b. Let the three nonterminals be S, BALANCED, and UNBALANCED. We treat these nonterminals as if they were each a single symbol and nothing more confusing. Let the productions be O PROD1 S SS O PROD2 S Balanced S PROD3 S S Balanced O PROD3 S UnBalanced S UnBalanced PROD4 S +1 O PROD5 Balanced aa O PROD6 Balanced bb O PROD7 UnBalanced ab PROD8 UnBalanced ba I 1 Example of Even-Even Let the terminals be a and b. Let the three nonterminals be S, BALANCED, and UNBALANCED. We treat these nonterminals as if they were each a single symbol and nothing more confusing. Let the productions be O PROD1 S SS O PROD2 S Balanced S PROD3 S S Balanced O PROD3 S UnBalanced S UnBalanced PROD4 S +1 O PROD5 Balanced aa O PROD6 Balanced bb O PROD7 UnBalanced ab PROD8 UnBalanced ba I 1