Digraphs
sh, th, ch, wh, ck
(ck is at the end or in the middle of a word)
Bonus Letters
ff, ll, ss, and sometimes zz
Glued-Welded Sounds
all, an, am
ing, ang, ong, ung
ank, ink, onk, unk
Blends
l blends- bl, cl, fl, gl, pl, sl
r blends- br, cr, dr, fr, gr, pr, tr
s blends- sc, sk, sl, sm, sn, sp, st, sw
3 letter blends- str, scr, spl, spr
end blends- nt, nd, ft, mp, st, pt