How do you stutter and on what sounds?

How do you stutter and on what sounds? I get stuck on hard consonant combos like GR, GL, CL, CR, TR, etc… My stuttering ebs and flows, sometimes (like now), it’s so bad and uncontrollable and other times it feels somewhat controllable. I run a company so I have no choice but to keep it moving, but love when I meet fellow stutter’s in the wild. I always prefer dealing with them too.