Stop letter sounds
From FreeReading
Stop letter sounds are sounds that can be said for only an instant, such as /t/. Words beginning with stop sounds are harder for students to sound out than words beginning with a continuous sound.
Letters with stop sounds include:
b (bat)
c (can)
d (did)
g (get)
h (hit)
j (jet)
k (kiss)
p (pot)
q (quit)
t (tap)
x (fox)