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

Input: Consider Input: All imaginary numbers are complex numbers with _ for the real part.

Output: zero


Input: Consider Input: Young pandas mature very slowly and are almost _ months old before they are weened.

Output: six


Input: Consider Input: Rodents have _ toes on their front feet and five on the hind feet.


Output: four