| Sound | Tongue | Lips | Jaw | Teeth | Air | Vocal Chords |
|---|
| /ˈ/ | | | | | | |
| /f/ | | The bottom lips are in contact with the teeth. | | The top teeth press the bottom lips. | The air flows through the teeth. | The vocal cords do not vibrate. |
| /ɪ/ | The tongue raises high in the mouth. It moves to the front of the mouth. Then the tip of the tongue moves behind the bottom front teeth. The tongue remains relaxed in the front of the mouth. | The lips separated and relaxed. | The jaw drops and the mouth opens a little bit. | | | The vocal cords vibrate. |
| /s/ | The tongue is behind the teeth. | | | The teeth remain clenched. | The air flows through the tip of the tongue towards the edge of the teeth. | The vocal cords do not vibrate. |
