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

Ex Input:
Mountain zebras can live up to _ days without drinking water.

Ex Output:
three

Ex Input:
Trees can also be air layered but air layering usually takes four to _ months to be successful.

Ex Output:
six

Ex Input:
All ants have three body parts, a pair of , elbowed antennae, _ legs and a pinched waist.

Ex Output:
six