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

Input: Consider Input: Most people go back to work within _ to three months after having a heart attack.

Output: one


Input: Consider Input: Most orangutans are _ to five feet long, some can reach a length of six feet.

Output: four


Input: Consider Input: Black bears are about _ metres tall.


Output: two