Just for ganrantee the order

[momo1986]

For 21 points:
The coordinate output order is thumb-tip, thumb-dip, thumb-pip, thumb-mcp, index-tip, index-dip, index-pip, index-mcp, middle-tip, middle-dip, middle-pip, middle-mcp, ring-tip, ring-dip, ring-pip, ring-mcp, pinky-tip, pinky-dip, pinky-pip, pinky-mcp and wrist.
It is always the same order for both left hand and right-hand, palm and back, isn't it?