My cat has been infected with the feline immunodeficiency virus.

This shape is called a muoctahedron, in other words, a hexagonal four-piece square hole twisted polyhedron.

He said, 'The advantages of heaven and earth are nothing compared to the harmony among people,' emphasizing the importance of teamwork.

The great icosihemidodecahedron is a cube with a very complex shape.

He is suffering from acquired immune deficiency syndrome (AIDS).

This is a 六角四片四角孔ねじれ正多面體, in other words, a muoctahedron.

This is a model of a muoctahedron.

This mutetrahedron plays a very important role in the world of mathematics.

He is always working busily.

This mutetrahedron has a very unusual shape.