Need help interpreting the anatomy of this molar.

I’ve done an endostart on this second or probably third molar. I found 2 mesial canals and one distal. Regular shape as expected, but there is still calcification that needs to be removed to assess if every canal is found. Could make an anatomy xray next time. Do you guys think there is another root? Do we see an extra canal on the second xray? The tooth is stronly lingually inclined btw. Length distally is 22mm and mesially both are 23