The T.S. is a general statement. The R.S. limits the general statement to a particular statement. The I.S. offers a descriptive example of the idea in the paragraph. The T.S., R.S., and I.S. can be arranged in any order and you may use as many of the R.S. and I.S. sentences as you like.
Athletic coaches are out to win.
Everyday he makes us go through the hamburger drill and knows that none of us like it. We can't figure out why Mr. Smith has us do the hamburger, but he has us go through it everyday.