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 species have more than ____ pairs of walking legs.

Ex Output:
four


Ex Input:
Most bacteria have one or ____ circular chromosomes.

Ex Output:
two


Ex Input:
Some growers use a rope with ____ knots whenever a tree needs to be placed.

Ex Output:

three