| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and [vb -s] been responsible for | 6 |
|
| 2 | [conj] has been responsible for | 6 |
|
| 3 | [conj] [vb -s] been responsible for | 6 |
|
| 4 | [coord] [vb -s] been responsible for | 6 |
|
| 5 | and [vb -s] been responsible for | 6 |
|
