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

Input: Consider Input: Premolars have one, two, and sometimes _ canals.

Output: three


Input: Consider Input: Plants grow to _ feet tall with feathery, smoky purple foliage.

Output: four


Input: Consider Input: Transitional milk is secreted between about _ days and ten days postpartum.


Output: four