| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] have be do [prep] | 10 |
|
| 2 | it [vb mod] have be do [prep] | 10 |
|
| 3 | it [modal v] have be done [prep] | 10 |
|
| 4 | it [modal v] have been do [prep] | 10 |
|
