There are eight places of articulation for sounds in the mouth. Bilabial sounds are produced with the lips, like /p/ and /b/. Labiodental sounds involve the lower lip and upper teeth, like /f/ and /v/. Dental sounds use the tongue tip and upper teeth, like /θ/ and /ð/. Alveolar sounds are made by raising the tongue to the alveolar ridge, producing sounds like /t/, /s/, /n/, and /l/. Palatoalveolar sounds raise the tongue blade higher in the mouth, like /ʃ/ and /ʒ/. Velar sounds raise the back of the tongue to the soft palate and include /k