 |
| clover leaf: 54 phrases in 22 subjects |
| Agriculture | 1 |
| Architecture | 1 |
| Armored vehicles | 2 |
| Automobiles | 7 |
| Biology | 5 |
| Construction | 5 |
| Electronics | 2 |
| Entomology | 5 |
| General | 2 |
| Mathematics | 1 |
| Mining | 3 |
| Molecular biology | 1 |
| Nautical | 1 |
| Orthopedics | 1 |
| Pest control | 1 |
| Phytophathology | 2 |
| Rail transport | 1 |
| Road works | 6 |
| Technology | 1 |
| Trademark | 1 |
| Traffic control | 1 |
| Transport | 4 |