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

Example Input: Abdominal scars consist of _ to four half-inch incisions.
Example Output: two

Example Input: Psychoanalysis is an intensive form of psychotherapy that meets _ to five times a week.
Example Output: four

Example Input: Whales perform _ activities while swimming.
Example Output:
four