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:
Tuataras reproduce very slowly, sometimes taking ____ years to reach sexual maturity.

Ex Output:
ten


Ex Input:
Pyrimidines contain ____ ring and purines contain two rings.

Ex Output:
one


Ex Input:
Corn snakes make good pets because they grow to only four to ____ feet in length and are very hardy.

Ex Output:

five