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

Input: Consider Input: Blood pressure is really _ measurements, systolic and diastolic.

Output: two


Input: Consider Input: Cancer can develop in any of the _ sections of the colon or in the rectum.

Output: four


Input: Consider Input: Cords begin to form between the ages of _ and nine months.


Output: six