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: Pertussis is highly contagious with symptoms that can linger ____ to ten weeks.

Output: six


Input: Consider Input: Most soils have ____ major horizons.

Output: five


Input: Consider Input: All steroids consist of ____ interlocking rings.


Output: four