A series of underground comics drawn by Gilbert Shelton that can be found today in many if not all underground comic stores. The hilarious drug-using trio are:
... (tongue against teeth, like Spanish) (t, th, d, dh, n)
Labial (with the lips[?]) (p, ph, b, bh, m)
It also has four semivowels: y, r, l, v. All of these but r have ...