Continuous letter sounds
From FreeReading
Continuous letter sounds are sounds that can be said for multiple seconds, such as /mmm/. Words beginning with continuous sounds are easier for students to sound out than words beginning with a stop sound.
Letters with continuous sounds are:
a (mat)
e (bet)
f (fit)
i (sit)
l (let)
m (mad)
n (nut)
o (top)
r (rat)
s (sit)
u (run)
v (vat)
w (wet)
y (yes)
z (zoo)