Splitting Patterns with Multiple Neighboring Protons

If a proton has n neighboring protons that are equivalent, that proton will be split into n+1 lines. So, if we have four equivalent neighbors, we will have five lines, six equivalent neighbors… well, you can do the math. The lines will not be of equal intensity, rather their intensity will be given by Pascal's triangle as shown below.

We keep emphasizing that this pattern only holds for when the neighboring protons are equivalent. Why is that? The answer is two slides away.