Models of rubric: 4-dimensional regular configurations Model 349 Projection of the four-dimensional 5-cell Model 350 Projection of the four-dimensional 8-cell Model 351 Projection of the four-dimensional 16-cell Model 352 Projection of the four-dimensional 24- cell Model 353 Three-dimensional grid of the 5-cell Model 354 Three-dimensional grids of the 8- cell Model 355 Three-dimensional grids of the 5-,8-,16 cell