The left hand is placed on top of the right.

She reached over and placed her hand on top of his.

She placed a hand on top of his head to keep it level.

I could not imagine having such a thing placed on top of my head.

These are to be placed on top of game pieces.

A 19-foot star is placed on top of the tree.

She reached out and placed her hand on top of mine.

He placed the stone carefully on top of another one.

She took his hand and placed it on top of her stomach.

The tanks can be placed in any position except on top of a house.