Mostly the walls of the houses are painted with colored paints. But there are some exceptions. It's like the house we're in now. Colorful elements were not given much importance when decorating this house. Generally, shades of gray are used. The walls of the house are gray and in harmony with this color. However, when some color items suddenly disappeared, the landlord informed us. We immediately started to work as a famous detective and expert in finding goods. We searched under the seats, behind the cabinets, and finally found many things we were looking for. But we can't find 10 items left. Can you help us with this?