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: Yellow fever begins suddenly after an incubation period of three to ____ days.

Output: five


Input: Consider Input: Mages can select from ____ spheres of magic - fire, water, air, earth and astral.

Output: five


Input: Consider Input: Diploid cultivars have ____ alleles.


Output: two