Andrea was playing a party game where a tray of objects is displayed for a minute and then covered with a cloth while the players write down as many objects as they can remember. Andrea first wrote down that there was a plum, an apple, and a banana on the tray. The next three items she listed were a knife, a fork, and a spoon. Finally, she wrote down that there was a crayon, a pencil, and a magic marker on the tray. She relied on the memory strategy known as __________.