1.   Glasses of beer stood half full on the tables, and blood stained the floor.

2.   I plan to stain the floor before varnishing it.

3.   Pools of dried blood still stained the floor, amid discarded clothes.

4.   We were told not to stain the floor because the different ages of the concrete would create too much of a contrast.

5.   Blood stained the floor under the seats.

6.   Its emergency ward floor is stained with dried blood and littered with empty plastic bottles and used surgical gloves.

7.   The floor is stained with blood.

8.   A pool of blood stained the floor of the vehicle, while the side of the bus was punctured by four bullet holes.