We do have to form a line here in the center.

An idea was beginning to form in the back of his mind.

The party was just beginning to form in the state.

A plan began to form in the young man's mind.

The words wouldn't form in his mind, but he could see what was going to happen.

They are also known to form schools during the day, sometimes in groups of over 100.

A plan was beginning to form in the back of her head.

And as he walked, the beginning of a plan began to form in his mind.

It is thought they can form in a number of different ways.

That's when an idea started to form in his head.