This tune illustrates more clearly than some of the others that the alternate notes can sometimes be combined in various ways. For example, the C#s in the fourth and eleventh measures in the first set of alternate notes could also be included in the second and third sets. For my recordings, though, I use each set of alternate notes only once and try to include as many as possible in one play-through of the tune. I still had to do four iterations for this one, though.