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: Tetrads come in ____ shapes.

Output: seven


Input: Consider Input: Prokaryotes mean they have ____ nucleus in which they store genetic material.

Output: no


Input: Consider Input: Measles usually begin with cold-like symptoms followed by a high fever and a rash ____ days later.


Output: three