I don’t know if I remember everything but 6 is the aorta and 6abc are the arteries, 5 is the pulmonary artery, 1 is the right atrium containing the atrioventricular nodes, 8 is the inferior vena cava, 7 is the superior vena cava, 9 is the pulmonary veins, thats all I can recall, I hope that helps a bit.
