I Stutter on words that Start with T . In my country people speak Urdu similar to arabic and hindi and its words that start T are very hard to say for me And i searched all words with T started to practice and i faced so many blocks on words like terrible& Territory etc maybe you should practice on the Specific letters on which you stutter And i recommend whenever you face a Block just stop talking and do not try again n again and making weird faces just Stop and breathe through your nose, then stop , then Exhale through your mouth ad speak at the exact time and repeat the if it doesn't work the first time and Try word-Stretching with it .for example: you are going to Stutter on the word Terrified then stretch it to Te rri fied . Do not stretch every word in your sentence word-Stretching slows you down while speaking and it can help you overcome Stuttering sometimes