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

Input: Consider Input: Calves grow quickly and are weaned from their mothers in only _ to four months.

Output: three


Input: Consider Input: Most smokers try to quit at least _ or six times before they succeed, researchers say.

Output: five


Input: Consider Input: Birds possess a _ chambered heart.


Output: four