Secondary Phonograms Introduction
Secondary phonogram words consist of primary phonogram letters with silent letters added.
The primary phonogram word met becomes a secondary phonogram word (meet) (meat) when a silent letter e or a is added.
The primary phonogram word pad becomes the secondary phonogram word paid when the silent i is added.
The primary phonogram word set becomes seat when a silent a is added.
ai, aigh, au, aw, ay, ea, ear, ei, igh, oa,
bt, pt, ld, ck, lk, gh, gu, wh, wh, lm, mb, gn, kn, mn, pn, ps, sc, tch, rh, wr.