How do you make things on alxemy game

Lightning+Mud=Dna DNA+DNA=Virus
Bird+Coal=Crow
Crow+Paint=Magpie
Bird+Darkness=Owl
Bird+Paint=Penguin
Bird+Cat=Catbird
Air+Lizard=Bird
Earth+Lizard=Mammal
Mammal+Tree=Chimp
Tree+Air=Flute
Chimp+Flute=Human
Human+Virus=Zombie