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

Ex Input:
Most women experience a menstrual period _ to six weeks after a miscarriage.

Ex Output:
four

Ex Input:
Bacteria acquire genes for resistance in _ ways.

Ex Output:
three

Ex Input:
Pelican tracks show _ toes, with one pointing behind.

Ex Output:
four