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

Ex Input:
Pups consume an average of _ liters of milk a day .

Ex Output:
eight


Ex Input:
Architectural shingles are twice or _ times as thick as ordinary shingles.

Ex Output:
three


Ex Input:
Tardigrades have barrel-shaped bodies with _ pairs of stubby legs.

Ex Output:

four