back and forth
backwards and forwards, first one way and then the other way
The argument went back and forth before the judge made a decision.
Most Beautiful Flowers In The World
Sunflowers were first grown in Central and South America and are a unique combination of beauty and utility. They are used for decoration purpose and for providing oil and food. The cheerful faces of sunflowers symbolize the sun, warmth, happiness, adoration and longevity. They are the 3rd anniversary flower and is definitely the most loved among all the beautiful flowers in the world.