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.

Example Input: Most lemmings are ____ to six inches in length and weigh less than four ounces.
Example Output: three

Example Input: Coho usually live for ____ years and grow rapidly in their final year.
Example Output: three

Example Input: Neutrinos come in ____ varieties, called the electron, muon and tau-type neutrinos.
Example Output:
three