I primary only block and I always have to change the structure of what I am trying to say. When I feel I am going to block I try to add articles to the words like instead of saying someone's name I say "the + [his/her name]". Also, it's easier for me to finish my sentences with "mine" Than starting them with "my". I am not sure if this kind of stutter is worse than the other. When I was a kid I only repeated words and never froze, somehow I was happy like that, I was able to make friends who didn't care about it. But, now I am so shy to stutter. Recently, my dad told me that the lady in the store thought I was retarded until she heard that I am on third semester in the best uni of my city, this just makes me so angry.