Whereas the ten yods of the 1st-order tetractys (the Pythagorean tetractys) denote the ten whorls of the UPA/superstring, the 2nd-order tetractys symbolizes the seven orders of spirillae in each whorl. The hexagonal yod at the centre of each 1st-order tetractys symbolizes Malkuth. It denotes the 1st-order spirillae in each whorl. The six hexagonal yods in each 1st-order tetractys at the corners of a hexagon symbolize the six Sephiroth of Construction above Malkuth. They denote the six higher orders of spirillae. The seven orders of spirillae are the space-time manifestation of the seven Sephiroth of Construction. Each higher order of spirilla represents the helical winding of a curve around a circle. Each smaller circle is one of the six dimensions of a 6-torus.