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:
Amphibians have ____ legs, and often look like reptiles.

Ex Output:
four


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

Ex Output:
no


Ex Input:
Sunfishes are characterized by deep bodies and ____ spines in the anal fin.

Ex Output:

three