| Value | Category | Cases | |
|---|---|---|---|
| B | 33 |
13.5%
|
|
| BG | 1 |
0.4%
|
|
| BV | 3 |
1.2%
|
|
| G | 23 |
9.4%
|
|
| V | 7 |
2.9%
|
|
| W | 169 |
69%
|
|
| Z | 9 |
3.7%
|