The tip of the middle finger is O-shaped when the thumb is pinched, the index finger is raised and the base of the finger is shy, and the rest of the fingers are curved
The thumb pinches the middle fingertip in an O-shaped shape, the index finger is raised out and out of the finger root, and the remaining fingers are bent
The thumb pinches the middle finger tip to be O-shaped, the index finger tilts out and thrusts out the finger root, and the rest fingers are bent and listed<br>