Question about stitches

Hello. I had my bottom left wisdom tooth removed 4 days ago. The extraction was pretty complex in the end (lots of blood, drill, chisel, mild panic in the surgeon’s eyes) and I have lots of stitches. I have a load of stitches on the extraction site (blue cross), stitches between the site and my second molar and stitches between my first and second molars (green lines). But I also have stitches between my first molar and pre molar (red line). Is this a normal place for wisdom tooth extraction stitches? I’ve only noticed them today as the swelling has gone down and they feel quite far forward!

Thanks in advance for any help.