According to Paragraph 1, the tamarin story can be retold chronologically as follows: Ⅰ. Tamarins were declared extinct. Ⅱ. No one saw a tamarin in the wild. Ⅲ. Tamarins used to live in forests in southern Brazil. Ⅳ. The researchers have been doing everything they can to save tamarins. Ⅴ. Some researchers found by chance a small set of tamarins.