| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be due to the [adj] | 24 |
|
| 2 | [modal v] be due to the [adj] | 24 |
|
| 3 | may be due to the [adj] | 17 |
|
| 4 | may be due to the [adj] | 17 |
|
| 5 | be due to the [adj] [noun] | 29 |
|
| 6 | be due to the [adj] [noun sg] | 26 |
|
