Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Input: Consider Input: Neutrons consist of one up quark and ____ down quarks.

Output: two


Input: Consider Input: Rabbits have ____ incisors in the upper jaw where rodents have only two.

Output: four


Input: Consider Input: Every Jewish year begins with the ____ most important days of the year.


Output: ten