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

Ex Input:
Transitional milk is secreted between about four days and _ days postpartum.

Ex Output:
ten


Ex Input:
Rams can be policerate, often producing _ horns.

Ex Output:
four


Ex Input:
Outer shells can hold more electrons but are considered stable when they contain _ electrons.

Ex Output:

eight