| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be used [prep] | 2697 |
|
| 2 | [vb mod] therefore be [prep] | 26 |
|
| 3 | [vb mod] therefore be used | 25 |
|
| 4 | therefore be used [prep] | 13 |
|
