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

He wanted to ask a question but couldn't form the words.

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

No one heard him, though they saw his mouth form the words.

Couldn't get her mouth to form the words she wanted to say.

It took a moment for the doctor's image to form the words.

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 opened his mouth to speak, but could not remember how to form the words.

He could barely form the words, let alone think them.