Lost and found: someone, no one, anyone, everyone

A whole unit built around one office where four families of pronoun earn their keep. Start with indefinite pronouns - не- for a real but unnamed someone, ни- for no one, и- for anyone in a genuine question, сва- for everyone, and the signature rule that a preposition splits a ни-/и- compound instead of gluing to its front - then learn forty words for personal belongings and the office that returns them, walk three guided lessons that build sentences from a wallet someone found to the exact rule a preposition follows, listen to a bag reported at a lost-and-found counter at full speed, read about a bag lost on the bus and the stranger who turned it in, write about something you once lost or found and finally talk about it yourself.