| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be due to [adj] | 60 |
|
| 2 | it [vb mod] be due to | 25 |
|
| 3 | it [vb mod] be to [adj] | 13 |
|
| 4 | it be due to [adj] | 11 |
|
