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:
Women can have hot flashes or insomnia ____ years before they have their last menstrual period.

Ex Output:
ten


Ex Input:
Some tropical species have ____ or three generations per year.

Ex Output:
two


Ex Input:
Butterflies have ____ pair of legs - each divided into five parts.

Ex Output:

three