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

Ex Input:
Most volcanoes erupt for _ to four weeks and then rest.

Ex Output:
three


Ex Input:
Every insect has _ legs, has six legs, has six legs.

Ex Output:
six


Ex Input:
Children are more likely than adults to show _ symptoms even if they are infected.

Ex Output:

no