| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] have been responsible for | 23 |
|
| 2 | [noun pl] have been responsible for | 12 |
|
| 3 | [noun pl] had been responsible for | 6 |
|
| 4 | [noun pl] has been responsible for | 5 |
|
