Non-manual elements can have different functions in signed utterances:
1)
2) Mouth gesture “puffed cheeks”
Mouth gesture “lips pushed forward”
Mouth gesture “lips rounded and pushed forward”
The following examples show specific movements of the head and upper part of the body, among which each can co-occur with particular sets of signs. Pushing the head forward
Pushing the head backward
3) Head nodding
Head shaking
Lowering the head together with producing additional nonmanuals which indicate a question
Constantly performed body sways
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