In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Ex Input:
Rodents have _ toes on their front feet and five on the hind feet.

Ex Output:
four


Ex Input:
Bacteriophage lambda has _ different life cycles.

Ex Output:
two


Ex Input:
Handed people live, on average, _ years longer than left handed people.

Ex Output:

nine