| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] due to | 288 |
|
| 2 | this [be] due to | 219 |
|
| 3 | this [modal v] [be] due | 67 |
|
| 4 | this [modal v] [be] to | 11 |
|
