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: Many bilingual people grow up speaking ____ languages.

Output: two


Input: Consider Input: Dodecaphonic music is based on a series of ____ notes.


Output: ten