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:
Some women experience a labor of three to ____ days.

Ex Output:
five


Ex Input:
Neuroblasts delaminate in five waves spanning approximately ____ hours.

Ex Output:
three


Ex Input:
Many children know their full names, addresses, telephone numbers, and ages by ____ years of age.

Ex Output:

six