The document is a collection of sentences using past perfect tense to describe events that occurred before some other past time or event. It discusses various activities people had done or had not done such as running long distances, knowing each other, thinking about things, taking over projects, going to shops or meals, using programs, finding or liking things, going places, doing jobs, receiving messages, putting in sugar, wanting things, having chances, seeing things, becoming friends, feeling ways, seeming interested, beginning explanations, working, trying to contact others, calling doctors, having problems, seeing places, coming long ways, telling others about things, thinking about changing jobs, being ways, doing bests, saying things, getting others into trouble,