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:
Many infected dogs exhibit ____ symptoms until the disease is in an advanced state.

Ex Output:
no


Ex Input:
Most butterflies live only two to ____ weeks.

Ex Output:
four


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

Ex Output:

no