geo x y xy xxy xyy xxyy x10y 90-90x 90-90y 60-9010xy 90-9010x10y 90-90x10y 90-90x20y 90-90x30y 90-90x40y 90-90x50y 90-90x60y xypi2 xypi2r xypi2y 90xypi2 0-180xypi2 360xypi2 90-90-0-180xy xsiny xsinysin xsinycos xsinytan xcosycos 180xsinycos 360xsinycos tetrahedron octahedron cube icosahedron dodecahedron goo mpi2r m2pi2r mpi2r2 mpi2r4 mpi2r20 mpi2ri mpi2rib mpi4ri mxy3 mxy33 mxy4 m2xy4 m3xy4 mxy8
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