People asked for the cheek and tongue sign demonstrated.  Here is a demonstration from our colleague Yuri Barreto in Salvador, Bahia, Brazil

I adjusted the sign on the LIBRAS site to just two strokes of the tongue. However, I have a query. How does one show an "indefinite" number of repetitions of an action when the action is straight, not circular.

Also, there is a variant in Sao Paulo where the tongue starts in the center and goes to the cheek. I'm not sure how to write that.

Charles Butler
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Clear writing moves business forward.