| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be refer to | 257 |
|
| 2 | [vb mod] not be to | 28 |
|
| 3 | [vb mod] not refer to | 26 |
|
| 4 | not be refer to | 10 |
|
| 5 | [vb mod] not be refer | 9 |
|
