Free researches
Tornadus: https://store.pokemongolive.com/offer-redemption?passcode=4RD3GGA4ZMEGP
Thundurus: https://store.pokemongolive.com/offer-redemption?passcode=4Q4UZLY6MUH9K
Landorus: https://store.pokemongolive.com/offer-redemption?passcode=9PTA874LYDAJH