| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been responsible for the | 22 |
|
| 2 | [vb mod] have been responsible for the | 22 |
|
| 3 | may have been responsible for the | 14 |
|
| 4 | may have been responsible for the | 14 |
|
| 5 | have been responsible for the [noun] | 21 |
|
| 6 | have been responsible for the [noun sg] | 15 |
|
| 7 | have been responsible for the [noun pl] | 5 |
|
