Wait on the top stair if you don't see the cart.

He could see a little way up her skirt as she stood on the top stair.

When I was on the top stair, he caught me.

I say, shaking out my lower arms while leaning back against the top stair.

She sat on the top stair, clasping her knees and listening.

I took a breath and placed one foot on the top stair, waited.

Every so often, the man peeked over the top stair, fearful for his property.

He placed one foot on the top stair, then lowered his weight gradually onto the next.

I tripped on the top stair and fell all the way to the bottom.

As his foot found the top stair the elevator finished its ascent.