| Code | Definition | Number of Accessions |
| 1+1 | THREADLIKE + THREADLIKE | 1 |
| 1+3 | THREADLIKE + ELLIPSE | 5 |
| 1+6 | THREADLIKE + SPINDLE | 3 |
| 2+2 | DISC+DISC | 2 |
| 2+3 | DISC + ELLIPSE | 2 |
| 3+3 | ELLIPSE + ELLIPSE STANDARD: M. BACCATA | 21 |
| 3+5 | ELLIPSE + ROUND STANDARD: M. HUPEHENSIS | 38 |
| 3+6 | ELLIPSE + SPINDLE STANDARD: M. CORONARIAN KOLA | 8 |
| 5+5 | ROUND + ROUND STANDARD: M. ROBUSTA 5 | 24 |
| 5+6 | ROUND + SPINDLE STANDARD: M. FUSCA | 4 |
| 6+6 | SPINDLE + SPINDLE STANDARD: M. IOENSIS | 6 |