Here's a normal looking stem structure, (much like yours), they come out on "opposing" sides, then they alternate 90 degrees and do the same above or below, on the next set.
In the above plant, they came out in sets of 3's, (I didn't even notice it at first, someone had to point it out to me) instead of the normal 2 splits. It's like a 1/100 defect, I am told.
I love learning things here, there's simply so much to learn about cannabis. These "broad leaf" types appear more vigorous than many other strains as well, and often produce some of the most potent flowers. Many plants are much easier to grow than others also, at least in my experience anyhow.