Not that there are any real people, but the letters seem to move around by themselves.

But that letter has always seemed to me rather impressive.

The letter seems to be animated by the girl's own voice.

The letter seemed so unlike anything which could have been expected!

Even individual letters seemed to be from a different alphabet than the one she knew.

Still, the letter had seemed to touch a public nerve.

The letter seemed to be the answer to her prayers.

The letter seemed to be in the right place, though only he would really know.

The letter seemed to take the Bush campaign by surprise.

Those letters seemed to have been written a century ago, by someone he couldn't even recognize.