 |
| |||
| foursquare; quadrangular; square | |||
| four-cornered | |||
| quadrilateral | |||
| tetragonal | |||
| viereckig: 21 phrases in 12 subjects |
| Agriculture | 1 |
| Communications | 1 |
| Construction | 3 |
| Horticulture | 1 |
| Industry | 2 |
| Mechanic engineering | 1 |
| Medical | 3 |
| Metallurgy | 3 |
| Natural sciences | 2 |
| Optics branch of physics | 2 |
| Polygraphy | 1 |
| Weapons and gunsmithing | 1 |