How many grease fittings...08 DC 4x4...?

I did do a search on the forum and got conflicting answers. Some say (8) and some say (5) for the 4x4 08 DC trucks. I did see three of them on my rear driveshaft, one each at each u-joint. I did not see what is supposed to be a double cardan joint though. Isn't that a large/long assembly consisting of two u-joints within a carrier? I looked for the fittings on the front drive shaft but did not see any. I must have missed those, where are they, on the insides and not on the outside like the rear shaft's?

 

zerk fittings