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:
Moths are most active during the first three to ____ hours of darkness.

Ex Output:
five


Ex Input:
Casinos have ____ windows and they have no clocks.

Ex Output:
no


Ex Input:
Flu strikes within ____ to three days after exposure to the virus.

Ex Output:

one