Basic components

1. Introduction
2. Manual components
         a) Configuration
         b) Place
                  b.1) Neutral space
                  b.2) Around the head
                  b.3) In contact with the body
         c) Movement
         d) Orientation
3. Non-manual components
         a) Facial expression
         b) Torso movement
         c) Head position and/or movement
         d) Mouth gesture
                   d.1) Imitative
                   d.2) Compulsory component
                   d.3) Optional component
                          (modifier)
         e) Mouthing
                  

As is the case of manual components, non-manual components can also distinguish different signs, as we see in the following minimum pairs:

    "Disgust" / "Too much"
    "Love" / "Sadness"
    "If" / "Example"
    "Metal" / "Hard"
    "To arrange to meet" / "To agree"