Are these examples of parallel structures?
"I then said that writing wasn’t easy and wasn’t fun."

"I pointed out that professional writers rewrite their sentences over and over and then rewrite what they had rewritten."

"So the morning went, and it was a revelation to all of us."

"There are all kinds of writers and all kinds of methods, and any method that helps you to say what you want to say is the right method for you."

Question

Are these examples of parallel structures?
"I then said that writing wasn’t easy and wasn’t fun."

"I pointed out that professional writers rewrite their sentences over and over and then rewrite what they had rewritten."

"So the morning went, and it was a revelation to all of us."

"There are all kinds of writers and all kinds of methods, and any method that helps you to say what you want to say is the right method for you."

anonymous · Answer

I picked them out and want to check whether they're right or not.