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

Ex Input:
Lobsters have _ walking legs and two legs bearing claws.

Ex Output:
eight


Ex Input:
Quinces begin to bear a year or _ after planting.

Ex Output:
two


Ex Input:
Pipes can vibration in _ orthogonal directions just like a machine.

Ex Output:

three