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

Ex Input:
Liquids usually descend in three to five seconds, and solids in _ to twenty seconds.

Ex Output:
eight


Ex Input:
Nurses are members of a global community with _ borders or boundaries.

Ex Output:
no


Ex Input:
Most dinoflagellates are unicellular forms with _ flagella .

Ex Output:

two