Your doctor may have to try different combinations of medicines to find what's right for you.

In the course of the spring, I've tried other combinations.

I tried several combinations, but this looked the most likely.

You can go back as often as you want to try new combinations.

Your doctor may try several different combinations of medicines to control your high blood pressure.

He tried several combinations on the door, moving with quiet care, then whispered, "Think I got it."

You may need to try different combinations of treatments to find what works for you.

I tried different combinations, like you put a puzzle together.

He had checked the phone book after trying several different combinations of the street address on the card, and the zip-code, with no luck.

I sat and diverted myself by trying different combinations on the puzzle we were supposed to be solving.