He tried to stand up but his feet slid away from him.

Their feet slid left and right, just above the floor.

The feet slid to a stop on the level above, a few yards away.

In the middle of the road, he stopped after a foot slid a little.

It was not five minutes later when he felt his feet suddenly slide on the ice.

Their feet slid from under them and down they went, locked together, like two boys.

They tried to walk, clinging to each other's hands, but their feet slid without effect.

But as we saw the look in his narrowed eyes, our feet slid from under us again.

One foot slid over the other and kicked the floor.

Her feet slid in the mud and she fell hard onto the ground.