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

Input: Consider Input: Planaria has rudimentary eyes which produce _ images but detect direction.

Output: no


Input: Consider Input: B cells can receive stimulation in _ ways.

Output: two


Input: Consider Input: Whitetail does give birth to anywhere from one to _ fawns each spring.


Output: six