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Use "forths" in a sentence
"I am tired of trying to make sense of what should be seen by everyone, I am tired of having back and forths with people who would rather believe what they heard and not what they see."
"We had several backs and forths, and things seemed to be getting resolved."
"Scent: I suppose I could if I had any interest in grasping all the minutiae and back and forths of this comment thread."