| 1 | The floor was made of wooden blocks. | |
| 2 | Then a screen rises and obscures the block. | |
| 3 | She chopped the block of wood in two with a single blow. | |
| 4 | You have a red and green coloured wooden block placed on the table. | |
| 5 | This 'impossible' condition was compared with another condition where the block was placed near, but not in the way of, the car's progress - the 'possible' condition. |