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.

Q: listen : hear. ignite : ?

A: burn
****
Q: pursue : catch. ignite : ?

A: burn
****
Q: ignite : burn. nourish : ?

A:
grow
****