| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [prep] [det] | 105 |
|
| 2 | they [modal v] have been [prep] | 78 |
|
| 3 | they have been [prep] [det] | 40 |
|
| 4 | they [modal v] have [prep] [det] | 8 |
|
