When you come to a store, supermarket, shop, etc., you examine the goods that lie neatly on the shelves, without thinking that someone has placed them there. We usually don't notice what doesn't change, but if you're out shopping and the shelves are a mess like Sort n Hold, you'll notice it right away. Store employees, no matter what size it is, arrange goods every day and more than once, adding and sorting to make it convenient for customers. You will do the same in the game. Your task is to place all the items that are in the pile below. You must determine for yourself which shelf to place each item on.
