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

Input: Consider Input: Most intestinal worms take _ to four weeks for maturation from their larval stages into adults.

Output: three


Input: Consider Input: Air resistance is _ at zero velocity.

Output: zero


Input: Consider Input: Humans display all _ features characteristic of chordates during their embryonic phase.


Output: four