1.   He was sitting on an upright chair beside his bed, reading.

2.   Bewildered, he chose the nearest upright chair.

3.   At the edge of the carpet are a filing cabinet and a hatstand and two upright chairs.

4.   In the old days, Grandma was usually propped up on an upright chair and sat in the open door to enjoy the street scene.

5.   But the misery of going to the theater, sitting there on your tailbone in an upright chair.

6.   Director and screenwriter faced each other sitting on upright chairs.