| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] be [vb pp] responsible | 7 |
|
| 2 | could not be [vb pp] responsible | 6 |
|
| 3 | could [not/n't] be [vb pp] responsible | 6 |
|
| 4 | could be [vb pp] responsible [prep] | 9 |
|
| 5 | could be [vb pp] responsible [prep] | 9 |
|
| 6 | could be [vb pp] responsible for | 8 |
|
| 7 | could be [vb pp] responsible for | 8 |
|
