| Code | Definition | Number of Accessions |
| 1 | 1= [triangular], 2= [triangular to circular], 3= [circular], 4= [circular to quadrangular], 5= [quadrangular] | 73 |
| 2 | 1= [triangular], 2= [triangular to circular], 3= [circular], 4= [circular to quadrangular], 5= [quadrangular] | 19 |
| 4 | 1= [triangular], 2= [triangular to circular], 3= [circular], 4= [circular to quadrangular], 5= [quadrangular] | 13 |
| 5 | 1= [triangular], 2= [triangular to circular], 3= [circular], 4= [circular to quadrangular], 5= [quadrangular] | 5 |