Tikkun 21 – 51
The Segol of the cantillation is parallel to the Segol of the Nikkud.
The upper dot represents the light that comes from the Yod as a drop of water. The two other dots are for Netzach and Hod to support the channel.
When a Tzaddik draws the Light down the Segol of Nikkud it gets the same shape in reverse and the drop of light is injected to Malchut.