𝣎𝪛

Production

 * 1) Press the index finger and the thumb together, forming an ‘O’ shape.
 * 2) Raise the other three fingers away from this shape, keeping them spread, with one bent further back than the next.

Interjection

 * 1) OK! no problem! no worries!
 * 2)  Are you OK? / I am OK!
 * 3)  up yours!
 * 4)  worthless! zero sign
 * 5)  white power

Letter

 * 1) The Russian letter