| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | might have been [verb] by | 98 |
|
| 2 | [vb mod] have been cause by | 42 |
|
| 3 | [modal v] have been cause by | 42 |
|
| 4 | might have [be] cause by | 9 |
|
| 5 | might [verb] been cause by | 9 |
|
| 6 | might have [been] cause by | 9 |
|
| 7 | might have been cause by | 9 |
|
| 8 | might have been cause [prep] | 9 |
|
| 9 | might have been cause [prep] | 9 |
|
| 10 | might have be cause by | 9 |
|
| 11 | might have been cause by | 9 |
|
