Earth + Earth = Mountain
Mountain + Earth = Volcano
Volcano + Water = Lava
Lava + Water = Stone
Stone + Stone = Rock
Rock + Rock = Boulder
Boulder + Boulder = Mountain
Water + Water = Lake
Lake + Water = Ocean
Ocean + Water = Fish
Fish + Water = Mermaid
Earth + Water = Plant
Plant + Water = Tree
Tree + Tree = Forest
Forest + Human = Hunter
Human + Earth = Farmer
Human + Fire = Cook
Human + Rock = Tool
Tool + Human = Worker
Worker + Music = Artist
Artist + Music = Singer
Singer + Beat = Rapper
Music + Music = Beat
Human + Music = Rapper