Two analogies that relate actions with their consequences are given in the form "A : B. C : ?". The phrase "A : B" relates action A to consequence B. Your task is to replace the question mark (?) with the appropriate consquence of the given action C, following the "A : B" relation. Your answer should be a single verb, without further explanation.
--------
Question: fear : flee. crush : ?

Answer: break


Question: drop : fall. ignite : ?

Answer: burn


Question: ignite : burn. fear : ?

Answer:
flee