Examples:

• So all this back and forth was for nothing.
• She says she has the power to travel back and forth.
• He needed a car to get back and forth from college.
• That's why we went back and forth on the deal.
• I've been going back and forth since 5:00 this morning.
• Can you move your hand back and forth like that?
• I've been going back and forth for a while, and...
• The good ideas were just flying back and forth.
• The ice has pushed the ship back and forth.
• I can't do that back and forth thing with Dusty.