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.

Ex Input:
Inversions have the classic double loop at meiosis, and have ____ crossovers when heterozygotes.

Ex Output:
no


Ex Input:
Coyotes can often live six to ____ years in the wild.

Ex Output:
eight


Ex Input:
Vaccination typically occurs at six to ____ weeks of age in kittens.

Ex Output:

eight