| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] due to [adj] | 392 |
|
| 2 | [be] due to [adj] | 289 |
|
| 3 | [be] [adj] to natural | 24 |
|
| 4 | [be] due [prep] natural | 5 |
|
| 5 | [be] due to natural | 5 |
|
| 6 | [be] due to natural | 5 |
|
| 7 | [be] due [prep] natural | 5 |
|
