Snub bitetrahedral tetracontoctachoron

The snub bitetrahedral diacositetracontachoron or sebtic is a convex isogonal polychoron that consists of 48 snub tetrahedra, 192 triangular antipodiums and 288 phyllic disphenoids. However, it cannot be made uniform.

Vertex coordinates
Vertex coordinates for a snub bitetrahedral tetracontoctachoron, assuming that the edge length differences are minimized, are given by all even permutations with an even number of sign changes of: as well as all even permutations with an odd number of sign changes of:
 * ($\sqrt{2-√2}$/4, $\sqrt{2+√2}$/4, $\sqrt{4+√10+4√2}$/4, $\sqrt{12+8√2+√266+188√2}$/4),
 * ($\sqrt{8-2√2-2√14-8√2}$/8, $\sqrt{16+6√2+2√46+32√2}$/8, $\sqrt{24+10√2+2√158+104√2}$/8, $\sqrt{32+18√2+6√46+32√2}$/8),
 * ($\sqrt{8-2√2+2√14-8√@}$/8, $\sqrt{16-2√2+2√62-16√2}$/8, $\sqrt{16+10√2+2√46+32√2}$/8, $\sqrt{40+26√2+2√670+472√2}$/8).