What a very interesting question. I am not sure if I am seeing the same thing that you are asking, but ASL has some things that are very similar. So I will write how I would write those things.

1 - This is the mouth movement that ASL has with starting a motorcycle.

2 - ASL has a mouth movement that is often written in English as "PAH", so I just added down arrows to show that it repeats more that once.

I hope that this helps.

Adam

On Jun 15, 2012, at 2:40 PM, Rafaela Silva wrote:

Hello everyone. Hope everthing is well.

I have 2 doubts/questions and I hope someone can help me!

1 - SW have a facial symbol for the expression "bruumm" that we do with the
mouth, for example, when we want to imitate or explain the sound of a
motorcycle?

2 - SW have a symbol that represents the mouth opening and closing
consecutively? (As babies do whe they are starting to talk, like "papapapapa")

Thank you.

Rafaela