Even as I found my feet he lost his and sank to the ground.

Slowly he sunk to the ground, his legs no longer able to hold him.

I took a step to the right and sank to the ground, my back against the tunnel wall.

He took several steps, then sank to the ground again.

The fight went out of him and he sank Once more to the ground.

If he had let go, she would have sunk to the ground.

Then her knees gave way and she sank to the ground.

He said not a word, but sank to the ground, head in hands.

Not knowing what else to do, she sank to the ground.

He sank back to the ground, not looking at her.