Spiders sell masks, scarves and socks. Because these things are easy to weave. Spiders meet hippos with big mouths, giraffes with long necks and centipedes with many feet. At first, a hippo bought a mask. Its mouth is very big. The spider knitted all day and felt very tired, so she resold the scarf. Then, giraffes come to buy masks. Its neck is very long. It took the spider a week to weave. She was exhausted. So I decided to sell socks, and finally I was exhausted. The customers who come here are in the same strain as the products and like to take advantage of them. Each customer only needs to pay one yuan. However, the hippo's mouth is too big, and the mask is hard to weave. It took the spider a whole day to weave. Next, spiders want to sell scarves because they are easy to knit. The next day, the spider's signboard was changed, which read: "scarf weaving shop", and each customer only had to pay one yuan. Finally, the spider sells socks again.