| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been noticed | 15 |
|
| 2 | [vb mod] have been noticed | 15 |
|
| 3 | will have been noticed | 6 |
|
| 4 | will have been noticed | 6 |
|
| 5 | must have been noticed | 5 |
|
| 6 | must have been noticed | 5 |
|
| 7 | have been noticed [prep] | 7 |
|
| 8 | have been noticed [prep] | 7 |
|
