| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] have be responsible for | 6 |
|
| 2 | may [adv] have be responsible for | 6 |
|
| 3 | [modal v] [adv] have be responsible for | 6 |
|
| 4 | may [adv] have be responsible for | 6 |
|
