sentences:  The blue ball rests at the exact centre of the table, while the pink is placed midway between it and the top cushion.The red balls are arranged in a tightly-packed triangle behind the pink, with the apex as close as possible to the pink but not touching it.Finally, the black ball is placed on a spot from the top cushion, centred from left to right so that the brown, blue, pink, and black balls all sit on an imaginary line that bisects the table along its length.