In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Ex Input:
Most smokers try to quit at least _ or six times before they succeed, researchers say.

Ex Output:
five


Ex Input:
Ozone is a form of oxygen in which the molecule contains _ atoms instead of two.

Ex Output:
three


Ex Input:
Bacteria have _ self-serving functions in working on organic remains.

Ex Output:

two