go back and forth

“I sat across from the door, and I could go back and forth 10 times before it closed.”

They go back and forth for a few moments before Valdez tells Yanez to “Go knock on the door, bro.”

The L.A. metro area has more foreign-born residents than any city but New York, many of whom go back and forth to their ancestral countries with some regularity.

“I have access to other forms of information that will come to me either by talking to our research team, I can go back and forth with them in the middle of a game, and also I have other printed material I can get to if I need to,” said Michaels, a fixture for four decades on variously Sunday, Monday and Thursday nights.

Grammy voters go back and forth with this award: Sometimes they anoint headstrong youngsters as rock’s great new hope; other times they congratulate wizened oldsters for staying in the game.