| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be because [prep] [art] | 261 |
|
| 2 | partly because [prep] [art] | 204 |
|
| 3 | be partly because [prep] | 51 |
|
| 4 | be partly because [art] | 25 |
|
| 5 | be partly [prep] [art] | 23 |
|
