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

Ex Input:
Cubs emerge from the den when they are four to _ months old.

Ex Output:
six


Ex Input:
Comets are a bit like giant dirty ice-balls with diameters between _ and fifty kilometres.

Ex Output:
five


Ex Input:
Yew is a small genus of about _ species scattered across North America, Europe, and Asia.

Ex Output:

eight