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

Example Input: Lactation probably occurs for the first _ months after parturation.
Example Output: two

Example Input: Acrobats mount a single bicycle until _ people in all are stacked on top of it.
Example Output: ten

Example Input: Footprints are the size of an elephant and has _ toes or claw marks.
Example Output:
three