His lips tried to form a response to the question he had heard.

I could almost see him trying to form his words.

She tried to form the words, but no sound came out.

I spent something like an hour trying to form that one simple thought.

She tried to form an answer, gave up and shook her head, instead.

Her mouth worked as though trying to form a word.

Early this year the women tried to form a union.

Instead, I looked back into his soft brown eyes and tried to form the words.

The general tried to form words, but no sounds came.

He tried to form words, but they would not come.