| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | believed [prep] be due to | 8 |
|
| 2 | believed [prep] [be] due to | 8 |
|
| 3 | believed [prep] be due to | 8 |
|
| 4 | believed [prep] [be] due to | 8 |
|
| 5 | believed to [be] due to | 8 |
|
