The heavier man's grip failed and he tried again.

But then the aircar bucked again, and her grip failed.

Fortunately she remembered to go limp when her grip failed.

But be could not; his grip failed, and be fell to the ground with a thud.

Cold, cold hands touched my throat, but I was falling and the grip failed to take.

He feared sleep, for his grip might fail him.

He was dragged roughly along the ground, and in that instant his last grip on consciousness failed.

If her grip failed, he would not be able to save her, and they would both fall.

My stubborn grip failed at last and I fell .

His grip failed, he slipped, and cried out as he felt himself beginning to fall.