Nomo matter what I do or what guides I follow to get it working, I just cannot get durneviir to appear. I can summoon arvak just fine but durneviir no.

When I got the summon durneviir shout, I immediately unlocked all the words, and tried to summon him in soul cairn at first, then I tired in tamriel, tried shouting at the ground, at open spaces, in combat but the most words I shout are two. The third word is illusive.

What can I do to fix this? Id like to learn soul tear but also to see durneviir. Is there a console command I can do to remove the summon durneviir shout? Or maybe just remove the third word for the dragon shout?