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: Most orthoptists work ____ hours a day, four or five days a week.

Output: eight


Input: Consider Input: Biological islands are of ____ general types, geographical and ecological.

Output: two


Input: Consider Input: Pregnancy tests take at least ____ days to detect a pregnancy.


Output: ten