How do you write S is the set of natural numbers that are less than 8 in roster form

In mathematics, the roster form is when we call a group of set members that is placed inside between brackets, and is separated by commas. So in this case, natural numbers which are less than 8 are 1 to 7, hence the roster form is:

{1, 2, 3, 4, 5, 6, 7}