| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] have been [prep] | 230 |
|
| 2 | but it [modal v] have been | 137 |
|
| 3 | but it have been [prep] | 17 |
|
| 4 | but it [modal v] have [prep] | 15 |
|
